A body can have consutant velocity when it follows a
1.elliptical path
2.circular path
3.parabolic path
4.rectilinear path
A body can have consutant velocity when it follows a
1.elliptical path
2.circular path
3.parabolic path
4.rectilinear path
A cyclist cycling around a circular racing track skids because
1.the centripetal force upon him is less than limiting friction
2.the centripetal force upon him is greater then limiting friction
3.the centripetal force upon him is equal to the limiting friction
4.the friction between the tyres of the cycle and road vanishes
A cyclist cycling around a circular racing track skids because
1.the centripetal force upon him is less than limiting friction
2.the centripetal force upon him is greater then limiting friction
3.the centripetal force upon him is equal to the limiting friction
4.the friction between the tyres of the cycle and road vanishes
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is
1.mg
2.mg - ma
3.mg + ma
4.mg - ma
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is
1.mg
2.mg - ma
3.mg + ma
4.mg - ma
If a body of mass 10 kg is allowed to fall freely its weight becomes
1.zero
2.89N
3.9.8 N
4.10N
If a body of mass 10 kg is allowed to fall freely its weight becomes
1.zero
2.89N
3.9.8 N
4.10N
Minimum number of communication satellites required to cover the whole carth is
1.4
2.3
3.2
4.5
Minimum number of communication satellites required to cover the whole carth is
1.4
2.3
3.2
4.5
The angular speed for daily rotatio of earth in rad S-1 is
1.2 ?
2. ?
3.4 ?
4.7.3 x 10-5 rads-1
The angular speed for daily rotatio of earth in rad S-1 is
1.2 ?
2. ?
3.4 ?
4.7.3 x 10-5 rads-1
The shaft of a motor rotates at a constant angular speed of 360rev/min. Angle turned through in 1 sec in radian is
1.?
2.3?
3.6?
4.12?
The shaft of a motor rotates at a constant angular speed of 360rev/min. Angle turned through in 1 sec in radian is
1.?
2.3?
3.6?
4.12?
What is outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s?
1.1N
2.10N
3.2N
4.100N
What is outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s?
1.1N
2.10N
3.2N
4.100N
A hoop and disc have same mass and radius. Their rotational K.E are related by an equation
1. K.Ehoop = K.Edisc
2.K.Ehoop = 2K.Edisc
3.K.Ehoop = 1/2K.Edisc
4.K.Ehoop = 4K.Edisc
A hoop and disc have same mass and radius. Their rotational K.E are related by an equation
1. K.Ehoop = K.Edisc
2.K.Ehoop = 2K.Edisc
3.K.Ehoop = 1/2K.Edisc
4.K.Ehoop = 4K.Edisc
According to Einstein the gravity interaction is possible between
1.material objects only
2.material objects and electromagnetic radiation only
3.electromagnetic radiations
4.none of the above
According to Einstein the gravity interaction is possible between
1.material objects only
2.material objects and electromagnetic radiation only
3.electromagnetic radiations
4.none of the above
Angular speed of seconds hand of a watch in rads-1 is
1.?
2.?/2
3.?/30
4.?/180
Angular speed of seconds hand of a watch in rads-1 is
1.?
2.?/2
3.?/30
4.?/180
Geo-stationary satellite completes one rotation around earth in
1.3 hours
2.6 hours
3.12 hours
4.24 hours
Geo-stationary satellite completes one rotation around earth in
1.3 hours
2.6 hours
3.12 hours
4.24 hours
If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is
1.4 rad. S-1
2.5 rad. S-1
3.1.6 rad. S-1
4.2.8 ms-1
If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is
1.4 rad. S-1
2.5 rad. S-1
3.1.6 rad. S-1
4.2.8 ms-1
One radian is equal to
1.67.3?
2.57.3?
3.87.3?
4.60?
One radian is equal to
1.67.3?
2.57.3?
3.87.3?
4.60?
Radius of geo-stationary orbit from center of earth is nearly
1.42000km
2.36000km
3.24000 km
4.18000 km
Radius of geo-stationary orbit from center of earth is nearly
1.42000km
2.36000km
3.24000 km
4.18000 km
The critical speed of an artificial satellite is
1.8 Kms-1
2.8.1 Kms-1
3.7.9 Kms-1
4.8 ms-1
The critical speed of an artificial satellite is
1.8 Kms-1
2.8.1 Kms-1
3.7.9 Kms-1
4.8 ms-1
The direction of linear velocity of body moving in a circle is
1.along the axis of rotation
2.along the tangent
3.directed towards the center
4.directed away form the center
The direction of linear velocity of body moving in a circle is
1.along the axis of rotation
2.along the tangent
3.directed towards the center
4.directed away form the center
The period of a circular motion is given by
1.T = rV
2.T = ?w
3.T = 2??
4.T = 2?/?
The period of a circular motion is given by
1.T = rV
2.T = ?w
3.T = 2??
4.T = 2?/?
The rotational K.E of hoop is equal to the
1.its translational K.E
2.half than its translational K.E
3.double than its translational K.E
4.four times than its translational K.E
The rotational K.E of hoop is equal to the
1.its translational K.E
2.half than its translational K.E
3.double than its translational K.E
4.four times than its translational K.E
When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by
1.mass of a body
2.velocity of body
3.tension in the string
4.centripetal acceleration
When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by
1.mass of a body
2.velocity of body
3.tension in the string
4.centripetal acceleration
When a body moves in a circle the angle between its linear velocity and angular velocity is always
1.180?
2.0?
3.90?
4.45?
When a body moves in a circle the angle between its linear velocity and angular velocity is always
1.180?
2.0?
3.90?
4.45?
Who discovered the inverse square law for gravity?
1.Einstein
2.Galileo
3.Newtons
4.Plank
Who discovered the inverse square law for gravity?
1.Einstein
2.Galileo
3.Newtons
4.Plank
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be
1.? R
2.2? R
3.zero
4.4? R
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be
1.? R
2.2? R
3.zero
4.4? R
A body of 2 kg is suspended form the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be
1.9.8 N
2.19.6 N
3.129.4 N
4.39.2 N
A body of 2 kg is suspended form the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be
1.9.8 N
2.19.6 N
3.129.4 N
4.39.2 N
A fracture hematoma has
1.Healing properties.
2.Destructive properties.
3.Neutralizing properties.
4.Dead cells
A plant has a growth pattern called
1.Closed growth
2.Open growth
3.In between the two
4.None of these
A satellite moving round the earth constitutes
1.An inertial frome of reference
2.non inertial frame
3.neither inertial nor non inertial
4.both inertial and non inertial
A satellite moving round the earth constitutes
1.An inertial frome of reference
2.non inertial frame
3.neither inertial nor non inertial
4.both inertial and non inertial
A smallest contractile unit of muscle contraction called sarcomere is the area between two:
1.H- zone
2.M- Line
3.Z- Line
4.A band
A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is
1.maximum
2.zero
3.equal to the weight of the stone
4.less than the weight of the stone
A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is
1.maximum
2.zero
3.equal to the weight of the stone
4.less than the weight of the stone
Among the following organisms which shows the best adaptations for locomotion?
1.Amoeba
2.Earthworm
3.Reptiles
4.Amphibians
Apical meristems are located at
1.Tips of leaves
2.Tips of flowers
3.Tips of roots and stems
4.Tips of roots only
Bony callus formation completes in:
1.2-3 weeks
2.3-4 weeks.
3.2-3 months.
4.3-4 months.
Cambium are examples of
1.Apical meristems
2.Intercalary meristems
3.Lateral meristems
4.None of these
Cells elongate by
1.Mitosis
2.Uptake of water
3.Stretching
4.Formation of cell wall
Cells of fibers and tracheids elongate during
1.Phase of cell division
2.Phase of cell elongation
3.Phase of cell maturation
4.Phase of cell differentiation
Centripetal force performs
1.maximum work
2.minimum work
3.negative work
4.no work
Centripetal force performs
1.maximum work
2.minimum work
3.negative work
4.no work
Determinate growth is
1.Growing continuously
2.Fluctuating growth
3.Grow to certain size and then stop
4.Vegetative roots and shoots grow by
Diameter of thick filament is:
1.7 nm.
2.8 nm
3.16nm
4.10-100 ?m.
During cell differentiation
1.Walls of cells become thick
2.Walls of cells become pitted
3.Both of these
4.None of these
Function of intercalary meristems is
1.Increase in length
2.Increase in diameter
3.Production of leaves and flowers
4.None of these
Growth of multicellular plants occur in
1.Two phases
2.Three phases
3.Five phases
4.Four phases
Growth process is
1.Irreversible
2.Reversible
3.Sometimes reversible sometimes irreversible
4.Temporary
Higher plants grow through
1.Growing points
2.Whole plant body is capable of growing
3.Only roots grow
4.None of these
How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit)?
1.365 days
2.730 days
3.329 days
4.129 days
How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit)?
1.365 days
2.730 days
3.329 days
4.129 days
If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules:
1.9
2.5
3.6
4.7
If a wheel of radius r turns through an angle of 30? then the distance through which any point on its rim moves is
1.? /3 x r
2.?/6 x r
3.?/30 x r
4.? / 180 x r
If a wheel of radius r turns through an angle of 30? then the distance through which any point on its rim moves is
1.? /3 x r
2.?/6 x r
3.?/30 x r
4.? / 180 x r
If two ends of fractured bone are opened and kept united via screws and wires drilled in bone substance. This step in fracture repair is called
1.Open reduction.
2.Closed Fixation.
3.Open fixation.
4.Immobilization
If we whirl a stone at the end of a string in the vertical circle it is likely to break when the stone is
1.at the highest point
2.at the lowest point
3.at any point during motion
4.at the point where gravity is not acting
If we whirl a stone at the end of a string in the vertical circle it is likely to break when the stone is
1.at the highest point
2.at the lowest point
3.at any point during motion
4.at the point where gravity is not acting
In angular motion Newtons second law of motion is
1.F=ma
2.F=?p/?t
3.? = 1a
4.all above
In angular motion Newtons second law of motion is
1.F=ma
2.F=?p/?t
3.? = 1a
4.all above
In case of planets the necessary acceleration is provided by
1.Gravitational force
2.frictional force
3.coulomb force
4.centripetal force
In case of planets the necessary acceleration is provided by
1.Gravitational force
2.frictional force
3.coulomb force
4.centripetal force
In multicellular plants cell division occur by
1.Binary fission
2.Conjugation
3.Meiosis
4.Mitosis
In plants growth is of
1.Four types
2.Five types
3.One type
4.Two types
Intercalary meristems are of
1.Permanent nature
2.Temporary nature
3.Some are permanent some temporary
4.None of these
Lateral meristems are present in
1.All plants
2.Gymnosperms and dicots
3.Monocots
4.In aquatic plants only
Meristems are group of cells that
1.Allow the surrounding region to divide
2.Provide nutrition
3.Help in movement
4.Retain the potential to divide
Meristems are of
1.Two types
2.Three types
3.Four types
4.Five types
moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ratio of displacement to the covered path will be
1.??R
2.2??R
4.4??R
moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ratio of displacement to the covered path will be
1.??R
2.2??R
4.4??R
Plasticity of cell wall increases during
1.Cell maturation
2.Cell elongation
3.Cell differentiation
4.Cell division
Rigor mortis i.e, stiffening of body after death results from:
1.Accunulation of rigid proteins molecules in sarcoplam.
2.Unavailability of ATP, which is necessary to break the link between actin and myosin.
3.Decrease in body temperature after death.
4.Death of tissue due to unavailability of O2.
S-band locomotion is characteristically seen in:
1.Bony fish
2.Cartilaginous fish.
3.Fish like mammals.
4.All fishes.
Secondary growth is actually
1.Extension of plant body
2.Increase in thickness
3.Production of leaves and flowers
4.None of these
Speed of growth is
1.Rapid throughout
2.Slow throughout
3.First slow then rapid then slow again
4.First rapid then slow
Tetany is caused by
1.Hypocalcemia
2.Hypercalcemia
3.Clostridum tetani.
4.Low O2 level
The circumference subtends an angle
1.? radianradian
2.2? radian
3.?/2 radian
4.4? Radian
The circumference subtends an angle
1.? radianradian
2.2? radian
3.?/2 radian
4.4? Radian
The contraction of which of the following muscle fibers, is controlled by hormones:
1.A smooth muscle
2.A cardiac muscle
3.A skeletal muscle.
4.All of these
The most important function of troponin is
1.To bind with actin
2.To bind with tropomyosin.
3.To bind with Ca2+ ions.
4.All of these
The planet nearest to the earth is
1.Venus
2.Mercury
3.Uranus
4.Sun
The planet nearest to the earth is
1.Venus
2.Mercury
3.Uranus
4.Sun
The relation between linear and angular acceleration is
1.a = a x r
2.a = r x a
3.a = a x r
4.r = a x a
The relation between linear and angular acceleration is
1.a = a x r
2.a = r x a
3.a = a x r
4.r = a x a
The span of broad jump depends upon
1.mass of the jumper
2.height of jump
3.angle of projection
4.none
The span of broad jump depends upon
1.mass of the jumper
2.height of jump
3.angle of projection
4.none
Vegetative roots and shoots grow by
1.Determinate growth
2.Primary growth only
3.Indeterminate growth
4.None of these
What happens during muscle contraction to the length of each myosin and action filament?
1.Z- lines get closer
2.A band becomes short
3.1 band elongates
4.There is no change in sarcomere
When a body is moving along a circular path it covers a certain angle in a given internal of time. Such type of motion is
1.vibratory motion
2. linear motion
3.rotatory motion
4. angular motion
When a body is moving along a circular path it covers a certain angle in a given internal of time. Such type of motion is
1.vibratory motion
2. linear motion
3.rotatory motion
4. angular motion
When a body moves in a circle of radius r with linear speed V its centripetal force is
1.mV/r2
2.mV/r
3.mV2/r
4.mV2/r2
When a body moves in a circle of radius r with linear speed V its centripetal force is
1.mV/r2
2.mV/r
3.mV2/r
4.mV2/r2
When a wheel 1 m in diameter makes 30 rev min the linear speed of point on its rim in ms-1 is
1.2?
2.?/2
3.?
4.20?
When a wheel 1 m in diameter makes 30 rev min the linear speed of point on its rim in ms-1 is
1.2?
2.?/2
3.?
4.20?
Which of the following animal uses Setae and Muscles for their Iocomotion?
1.Cockroach
2.Snail
3.Earthworm
4.Star fish
Which of the following cells are involved in soft callus formation?
1.Fibroblast and osteoblast.
2.Osteoblast and osteoclast.
3.Osteoclast and osteocyte
4.Onteocyte and osteoblast
Which of the following is a uni-nucleated cell?
1.A smooth muscle cell.
2.A cardiac muscle cell.
3.A skeletal muscle cell.
4.All of these
Which of the following is the swiftest form of the locomotion?
1.Plantigrade
2.Digitigrade
3.Unguligrade
4.Hopping
Which of the following muscle is an antagonistic member of Biceps brachii?
1.Bracheoradialis
2.Brachialis
3.Intercostals
4.Triceps
Which of the following pairs of fins in a fish body are paired?
1.Dorsal and ventral.
2.Pectoral and Pelvic.
3.Tail and anal
4.All of these
Which of the following statement about fatigue is correct?
1.The major event in it is accumulation of lactic acid.
2.Lactic acid accumulation turns pH in acidic range leading to muscle ache.
3.Ionic imbalance may also cause it.
4.All of these
Which of the following statement about osteoporosis is incorrect.
1.It results from estrogen deficiency.
2.Bone eating process takes over bone formation process.
3.There is reduction of bone mass and change in chemical composition of the matrix
4.It is common in old age.
Which of the following statement is incorrect regarding the locomotion in Euglena?
1.Move with the help of flagellum, attached to the anterior pole of the body.
2.Flagellum whipping backwards moving the organism forward, and when moves forward the organism moves backward.
3.Myonemes can change the direction of the body by making it to shorten from anterior to the posterior pole.
4.None of these
Which of the following statements about fractures in old age is incorrect?
1.They are more common than in adult age.
2.Occur as a result of bone being thin and weak.
3.Due to good blood supply it results in quick healing.
4.It involves osteoblasts and osteocytes.
Which of the following statements is incorrect about skeletal muscle fibers?
1.They are multinucleated.
2.They are 10 - 100 ?m in diameter & surrounded by sarcolemma
3.They contain O2 storing molecules called hemoglobin.
4.Their cytoplasm contains high concentration of carbohydrates
Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.
1.Binding sites of actin get attached to the myosin head.
2.Troponin uncovers the actin binding sites.
3.Tropomyosin gets removed from the binding sites of actin filaments.
4.Ca2+ goes back inside sarcoplasmic reticulum.
Which of the following vertebrates have a fish-like body?
1.Reptiles
2.Aves
3.Amphibians
4.Mammals
Which of the follwing is a childhood disease resulting from nutritive Ca2+ deficiency:
1.Hypocalcaemia Tatanic spasms.
2.Osteomalacis
3.Rickets
4.Tetany
Which one of the following is an example of a non-elastic connective tissue?
1.Ligaments
2.Tendon
3.Muscles
4.None of these
Why skeletal muscles are called striated muscles?
1.They appear darker than smooth muscles by naked eye.
2.Alternating dark and light bands appear on their surface when visualized by naked eye.
3.Alternating dark and light bands appear on their surface when visualized via a microscope.
4.All of these