First Year Physics Chapter 4 Online MCQ Test for 1st Year Physics Chapter 4 (Work and Energy)


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MCQ's Test For Chapter 4 "Physics ICS Part 1 Chapter 4 Online Test"

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Physics ICS Part 1 Chapter 4 Online Test

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Question # 1

Which of the following is non conservative force.

Question # 2

A man carries a bucket of water of 1 kg for 10m height then work done is.

Question # 3

Two bodies A and B of mass 1 kg and 2 kg respectively have same momentum. Which one has greater KE.

Question # 4

If an agent consumes a power of 1 kW in one hour the work done is.

Question # 5

If a body mass 2 kg is raised verticaly through 2 m then the work done will be.

Question # 6

Th dimension of powr is.

Question # 7

An iron sphere whose mass is 30 kg has the same diameter as an aluminium sphere whose mass is 10.5 kg. The spheres are simultaneously dropped form  a cliff. When they are 10 m fromt he gorund, they have identical.

Question # 8

Absolute P.E. of a body of mass"m" at a distance"r" from earth centre is.

Question # 9

The work done in lifting a boyd of mass m from surface of the earth to an infinite distance is.

Question # 10

Gravity performs zero work when body moves

Question # 11

1 kilowatt is equal =

Question # 12

Which one of the folloiwng is/are correct.

Question # 13

Ratio of dimension of power and K.E. is.

Question # 14

If the velocity of the body becomes double and mass become half thenints K.E.

Question # 15

A1 kg mass has potential energy of 1 joule relative to the ground when it is at  a height of.

Question # 16

A dry battery cna deliver 3000 J of energy to a 2 W small electric motor befor the battery is exhausted.For how many minutes does the battery run.?

Question # 17

Work done on a body for increasing velocity results in.

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Sr.# Question Answer
1

Kilowatt hour is unit is.
A.

Power

B.

Work

C.

Force

D.

Momentum
2

A body rest may have.
A.

Speed

B.

Energy

C.

Velocity

D.

Momentum
3

1 kilowatt is equal =
A.

1000 J /s

B.

106 watt

C.

0.1 x 103  Watt

D.

6.25 x 10 25 Watt
4

Gravity performs zero work when body moves
A.

Vertically

B.

Horizontally

C.

At 60% with vertical

D.

At 45% with horizontal
5

The kinetic energy acquired by a distance from rest under eh action of a constant fore is directly proportinal to.
A.

m1

B.

1m

C.

m

D.

Independent of m
6

Power can be defined as the scalar product of.
A.

force and displacemnt

B.

Force and velocity

C.

Force and time

D.

Force and mass
7

Which of the following is non conservative force.
A.

Elastic spring force

B.

Electric force

C.

Gravitational force

D.

Tension in string
8

The dimension of power
A.

[ML2 T-3]

B.

[ML-1T-1]

C.

[ML2T2]

D.

[ML-2T-4]
9

Th dimension of powr is.
A.

[ML2 T-3]

B.

[ML-1T-1]

C.

[ML2T2]

D.

[ML-2T-4]
10

Power of lamp is 6 W. How much energy does a lamp give out in 2 min?
A.

12 J

B.

720 J

C.

20 J

D.

3 J
11

Two bodies A and B of mass 1 kg and 2 kg respectively have same momentum. Which one has greater KE.
A.

Cannot be determined

B.

A

C.

B

D.

Both hae the same K.E.
12

The work done in lifting a boyd of mass m from surface of the earth to an infinite distance is.
A.

K.E.

B.

Absolute P.E.

C.

Elastic P.E.

D.

Absolue K.E
13

Which one of the folloiwng is/are correct.
A.

Work is positive if 0< 90o

B.

Work is 0 if θ  90o

C.

Work is negative if θ  90o

D.

All of these
14

If an agent consumes a power of 1 kW in one hour the work done is.
A.

One emega watt hour

B.

One kile watt hour

C.

One deci watt hour
15

A force of 10 N is rquirired  to overcome  road friction and air resistanc in propelling an automobile at 30 m/sec. power develped by the engine.
A.

600 W

B.

400 W

C.

300 W

D.

500 W
16

A man carries a bucket of water of 1 kg for 10m height then work done is.
A.

15 J

B.

10 j

C.

98 J

D.

2.5 J
17

Work done on a body for increasing velocity results in.
A.

Change in K.E.

B.

Change in gravitational P.E.

C.

Change in electric P.E.

D.

All

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