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241.

The energy possessed by a body, for doing work by virtue of its position, is called

A.	potential energy	B.	kinetic energy
C.	electrical energy	D.	chemical energy

242.

The kinetic energy of a body

does not depend

depends

243.

The potential energy stord by a spring in compression, is called strain energy.

Yes

244.

When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is

A.	mv2	B.	mgv2
C.	0.5 mv2	D.	0.5 mgv2

245.

When a body of mass moment of inertia / (about a given axis) is rotated about that axis with an angular velocity ?, then the kinetic energy of rotation is

A.	I ?	B.	I ?2
C.	0.5 I ?	D.	0.5 I ?2

246.

The wheels of a moving car possess

A.	potential energy only	B.	kinetic energy of translation only
C.	kinetic energy of rotation only	D.	kinetic energy of translation and rotation both

247.

According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

True

False

248.

The total energy possessed by a system of moving bodies

A.	is constant at every instant	B.	varies from point to point
C.	is maximum in the start and minimum at the end	D.	is minimum in the start and maximum at the end

249.

The potential energy of a vertically raised body is

A.	equal to	B.	less than
C.	greater than

250.

When the spring of a watch is wound, it will possess

A.	strain energy	B.	kinetic energy
C.	heat energy	D.	electrical energy