# MCAT/MCAT Physics questions and answers work and energy Sample Test,Sample questions

## Question: `A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference?`

1.man does more work than child

2.child does more work than man

3.both do the same amount of work

4.it is a foolish question

1.infinite

2.T/g

3.zero

4.g/T

## Question: `Biomass can be converted into fuels by`

1.direct combustion

2.fermentation

3.both (a) and (b)

4.none of these

1.x = x?

2.x = x?/2

3.x = x?/4

4.x = x?2/2

## Question: `Geothermal energy is a ____________________ source of energy.`

1.non-renewable

2.stable

3.renewable

4.none of the above

## Question: `Gravitational P.E of a body has`

1.no formula

2.a formula mgh only

3.a formula

4.no general formula

1.four times

2.six times

3.eight times

4.two times

1.1600 ms-1

2.50.6 ms-1

3.71.6 ms-1

4.2263ms-1

## Question: `If velocity is doubled then`

1.momentum increases 4 times and K.E increases 2 times

2.momentum and K.E. remain same

3.momentum increases 2 times and K.E increases constant

4.momentum increases 2 times and K.E increases 4 time

## Question: `In S.H.M. the velocity of a particle is maximum at`

1.mean position

2.extreme position

3.middle between mean and extreme position on the right side

4.middle between mean and extreme position on the left side

## Question: `In vibratory motion`

1.P.E. remains constant

2.K.E. remain constant

3.total energy remain constant

4.total momentum remain constan

1.1.44kw/m2

2.1.4kw/m2

3.1 kw/m2

4.none

1.36 x 106 J

2.36 x 1012 J

3.36 x 109 J

4.36 x 108 J

## Question: `Propulsion force of a rocket is`

1.non-conservative force

2.conservative force

3.both (a) and (b)

4.non of these

1.vibration S-2

3.hertz

4.ms-1

## Question: `Simple harmonic motion is a type of`

1.rotational motion

2.circular motion

3.musical arrangement

4.vibratory motion

1.w2x

2.wx2

3.w2x

4.wx2

1.area

2.work done

3.power

4.none of these

1.120 J

2.60 J

3.30 J

4.0.02 J

1.[ML2T-3]

2.[ML2T-2]

3.[ML2T3]

4.none of these

1.0?

2.45?

3.90?

4.180?

1.power

2.work

3.impulse

4.torque

## Question: `The energy of SHM is maximum at`

1.mean position

2.extreme position

3.in between mean and extreme

4.all positions during SHM

1.4.2 km S-1

2.7.5 km S-1

3.9.5 km S-1

4.1.1 km S-1

## Question: `The escape velocity of a body in gravitational field of earth is independent of`

1.its mass

2.the angle at which it is thrown

3.both its mass and the angle at which it is thrown

4.gravitational field of earth

1.mg cos?

2.mg sin?

3.mg ton?

4.mg

1.1 hertz

2.0.5 hertz

3.1.5 hertz

4.2.5 hertz

1.Earth

2.Neptune

3.Jupiter

4.Moon

1.100 cm

2.99 cm

3.99.2 cm

4.98 cm

1.1

2.2

3.3

4.4

1.V esc = 1/2Vo

2.V esc = ?2 Vo

3.V esc = Vo

4.V esc = 2Vo

## Question: `The SI unit of force constant is identical with that of`

1.force

2.pressure

3.surface tension

4.loudness

## Question: `The source of geothermal energy is`

1.decay of radioactive element in the earth

2.compression of material in the earth

3.residual lost of the earth

4.all as said in a - b and c

## Question: `The source of tidal energy is`

1.sun

2.earth

3.both (a) and (b)

4.moon

1.once

2.twice

3.four time

4.eight time

1.4 seconds

2.3 seconds

3.2 seconds

4.6 seconds

1.standing wave

2.sine wave

3.square wave

4.none

1.positive

2.negative

3.zero

4.none of these

## Question: `Total energy of a body executing S.H.M is directly proportional to`

1.square root of amplitude

2.the amplitude

3.reciprocal of amplitude

4.square of amplitude

## Question: `When arrow is released form its bow, its energy is transformed from`

1.heat energy to K.E

2.elastic P.E to K.E

3.elemical energy to elastic P.E

4.K.E to elastic P.E.

1.double

2.four times

3.one half

4.none time

## Question: `When the speed of a moving body is doubled then`

1.its K.E is doubled

2.its acceleration is doubled

3.ts P.E is doubled

4.its momentum is doubled

## Question: `When two protons are brought together`

1.Kinetic energy increases

2.P.E. between them increases

3.P.E. between them decreases

4.P.E. between tem does not change

1.friction

2.electric

3.gravitational

4.magnetic

## Question: `Work done by the force of friction is`

1.always positive

2.always negative

3.positive only for small frictional force

4.positive only for large frictional force

## Question: `Work done by variable force is determine by dividing`

1.force into small interval

2.displacement into small interval

3.both force and displacement into small intervals

4.force into small and displacement into large intervals

## Question: `Work done on the body equals to the`

1.change in its K.E always

2.change in its P.E always

3.change in its K.E and change in its P.E

4.neither change in K.E and nor change in its P.E

## Question: `Work has the dimension as that of same as that of`

1.torque

2.angular momentum

3.linear momentum

4.power

1.rotory

2.photovoltaic

3.galvanic

4.non of these

## More MCQS

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