# MCAT/MCAT Physics Mcq Questions Circular motion Set 1 Sample Test,Sample questions

## Question: `? ? If A=Ax i^ + Ay j^ + Az K^ B = Bx i^ + By j^ + Bz K^ then`

1.?? A. B = Ax Bx + Ay By + Az Bz

2.?? A. B = Ax By + Ay Bz + Az By

3.?? A. B = Ay Bz + Az By + Az Bx

4.?? A. B = Ax Bz + Ay By + Az Bx

## Question: `? The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is`

1.2i^ - 2j^ + k^

2.(2i^ - 2j^ +k^)/9

3.(2i^ - 2j^ +k^)/3

4.(2i^ - 2j^ +k^)/5

## Question: `A body in equilibrium`

1.always at rest

2.always in uniform motion

3.may be at rest or in uniform motion

4.may be at rest or in motion

## Question: `A body will be in complete equilibrium when it is satisfying`

1.Ist condition of equilibrium

2.2nd condition of equilibrium

3.both Ist and 2nd condition of equilibrium

4.impossible

## Question: `A central force is that which`

1.can produce torque

2.can not produce torque

3.some time can produce torque some time can not

4.has no relation with torque

## Question: `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

## Question: `A vector can be multiplied by a number. The number may be`

1.dimensionless

2.dimensional scalar

3.negative

4.all a, b and c are correct

## Question: `According to Einstein the gravity interaction is possible between`

1.material objects only

2.material objects and electromagnetic radiation only

4.none of the above

## Question: `Addition of vector obeys`

1.commutative law

2.distributive law

3.associative law

4.all given laws in a , b and c

## Question: `Angle between two vectors A and B can be determined by`

1.their dot product

2.their cross product

3.head to tail rule

4.right hand rule

## Question: `Cos?i^ + Sin?j^ is a`

1.vector

2.position vector

3.vector in the direction at angle ? with x-axis

4.unit vector in the direction at angle ? with x-axis

1.3 hours

2.6 hours

3.12 hours

4.24 hours

1.A.B = A^ B^

2.|A| = |B|

3.|A^| = |B^|

4.AB^ = BA^

1.west

2.north

3.down

4.up

## Question: `In which quadrant the two rectangular components of a vector have same sign?`

1.1st

2.2nd

3.both 1st and 3rd

4.4th

## Question: `In which quadrant, only value of tan will be positive?`

1.first

2.second

3.third

4.both 1st and 3rd

## Question: `It is easier to turn a steering wheel with both hands than with a single hand because`

1.accelerating force increases on the wheel

2.two forces act on the wheel

3.two hands provide firm grip

4.couple acts on the wheel

1.1

2.i^

3.j^

4.k^

1.one

2.two

3.three

4.infinite

1.one

2.two

3.three

4.infinite

## Question: `Null vector is a vector which has`

1.zero magnitude

2.no specified direction

3.both a and b are correct

4.both a and b are not correct

1.67.3?

2.57.3?

3.87.3?

4.60?

1.42000km

2.36000km

3.24000 km

4.18000 km

## Question: `Rectangular coordinate system is also called`

1.polar coordinate system

2.Cartesian coordinate system

3.cylindrical coordinate system

4.spherical coordinate system

## Question: `SI unit of torque is`

1.N.m

2.joule

3.both a and b are correct

4.neither a nor b is correct

1.8 Kms-1

2.8.1 Kms-1

3.7.9 Kms-1

4.8 ms-1

1.zero

2.one

3.i^

4.k^

## Question: `The cross product of two vectors is a negative vector when`

1.they are parallel vectors

2.they are anti parallel vectors

3.they are perpendicular vector

4.they are rotated through 270?

1.[ML2T-2]

2.[MLT-2]

3.[ML2T]

4.[ML-2T-2]

1.one angle

2.two angle

3.three angle

4.no angle

## Question: `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

## Question: `The direction of vector product is given by`

1.head to tail rule

2.right hand rule

3.left hand rule

4.triangular rule

1.30?

2.45?

3.60?

4.180?

1.0

2.1

3.-1

4.i^

1.T = rV

2.T = ?w

3.T = 2??

4.T = 2?/?

1.30?

2.60?

3.90?

4.120?

## Question: `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

1.concurrent

2.non concurrent

3.parallel

4.non parallel

## Question: `Torque acting on a body determines`

1.acceleration

2.linear acceleration

3.angular acceleration

4.direction of motion of the body

## Question: `Torque is defined as`

1.turning effect of force

2.cross product of position vector and force

3.product of force and moment arm

4.all a, b and c are correct

## Question: `Two vectors A and B are making angle ? with each other. The scalar projection of vector B on vector A is written as`

1.A.B/A

2.A.B/B

3.A.cos ?

4.both a and b are correct

## Question: `Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then`

1.B is anti parallel to A

2.B is negative vector of A

3.B has negative magnitude

4.B is perpendicular to A

## Question: `Unit vector n^ is along`

1.x-axis

2.normal on a surface

3.y-axis

4.z-axis

1.30?

2.60?

3.90?

4.120?

1.180?

2.0?

3.90?

4.45?

## Question: `which of the following pairs does not have identical dimensions ?`

1.torque and energy

2.momentum and impulse

3.energy and work

4.mass and moment of inertia

## Question: `Which one is a unit vector?`

1.??3 i^ + ??3 j^ + ??3 k^

2.1/??3 i^ + 1/??3 j^ +1/ ??3 k^

3.??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^

4.both b and c are correct

## Question: `Which one is not a correct relation?`

1.AxB = -BxA

2.|AxB| = -|BxA|

3.AxB = AB Sin?n^

4.BxA = AB Sin?(-n^)

## Question: `Which one is not a type of dynamic equilibrium?`

1.rotational equilibrium

2.translational equilibrium

3.static equilibrium

4.both a and c are corret answer.

## Question: `Which one is not correct for a vector A= 2??2 i^ + ??2 j^?`

1.has direction ?=45? with x-axis

2.has magnitude 2

3.has magnitude 2 and direction ?=45? with y-axis

4.has magnitude -2

## More MCQS

##### Olete Team
Online Exam TestTop Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on Online Exam Testwebsite is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!