Work, Energy and Power (BITSAT Physics): Questions 4 - 7 of 19

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Question number: 4

» Work, Energy and Power » Potential Energy

MCQ▾

Question

If a body of mass Equation falls from a height Equation and its total potential energy is conserved into kinetic energy, at the point of contact of the body with the surface, then decrease in potential energy of the body at the contact is –

Equation

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 5

» Work, Energy and Power » Work Done

MCQ▾

Question

If the magnetic dipole is rotated through angle Equation with respect to the direction of Equation . Then work done will be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 6

» Work, Energy and Power » Kinetic Energy

MCQ▾

Question

A particle of mass Equation and charge Equation is placed at rest in a uniform electric field Equation and then released. The kinetic energy attained by the particle after moving a distance Equation is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 7

» Work, Energy and Power » Work Done

MCQ▾

Question

A body of mass Equation is rotating in a circular path of radius r with constant velocity. The work done in one complete revolution is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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