MDCAT Physics Chapter 2 Work and energy Online Test

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  • Chapter NameWork ,Energy & Power
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MDCAT Physics Chapter 2 Work and energy Online Test

  • Total Questions20

  • Time Allowed20

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MDCAT Physics Chapter 2 Work and energy Online Test

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Question # 1

Which of the following is a unit of energy?

Question # 2

A man M1 of mass 80 kg runs up a staircase in 15s. Another man M2 also of mass 80 kg runs up the same staircase in 20s. The ratio of the power developed by them will be

Question # 3

You lift a heavy book from the floor of the room and keep it in the book-shelf having a height 2 m. In this process you take 5 seconds. The work done by you will depend upon:

Question # 4

When a person lifts a body from ground work done by lifting force is?

Question # 5

A ball is thrown vertically upwards. Neglecting air resistance, which statement is correct?

Question # 6

In an explosion a body breaks up into two pieces of unequal masses. In this:

Question # 7

Two bodies moving towards each other collide and move away in opposite directions. There is some rise in temperature of bodies because a part of the kinetic energy is converted into

Question # 8

A force 𝑭 = (πŸ“π’ŠΜ‚+ πŸ‘π–©Μ‚) newton is applied over a particle which displaces it from its origin to the point 𝒓 = (πŸπ’ŠΜ‚βˆ’ πŸπ–©Μ‚) meters. The work done on the particle is:

Question # 9

The gravity does no work, when the body moves:

Question # 10

A person weighing 20 mg walks on a level platform with a speed of 2 ms-1 . The work by the person against the force of gravity is:

Question # 11

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joules, the angle which the force makes with the direction of motion of the body is?

Question # 12

The energy which an -e acquires when accelerated through a potential difference of 1 volt is called?

Question # 13

An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor in watts is

Question # 14

In a gravitational field when work done by gravity is negative then

Question # 15

A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is 6 ms1 The KE of other mass is

Question # 16

Kinetic energy of a body moving with speed of 10 ms-1 is 30 J. If its speed becomes30 ms-1 then its K.E becomes

Question # 17

The power needed to lift amass of 5000g to height of 1min 2 second is

Question # 18

An elevator's motor produces 3000 W power. The speed With Which it can lift a 1000 kg load is:

Question # 19

The body at rest may have:

Question # 20

If the velocity of a body becomes half, the kinetic energy of body will become

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