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171.

A satellite launch station should be

A.	near the equatorial region	B.	near the polar region
C.	one the polar axis	D.	all the locations are equally good

172.

Rain drops (assumed to be spherical) of radii R1, 2R1, 3R, 4R,

A.	all of them will be same	B.	drops of radius R will be maximum
C.	drops of radius R will be minimum	D.	all of them will be zero

173.

A non-reversible machine has efficiency

A.	nearly 100%	B.	between 75% and 99%
C.	more than 50%	D.	less than 50%

174.

A man is standing ner the edge of a uniformly rotating platform about an axis passing through its centre. The speed of rotation of the platorm will decrease if he

A.	jumps out from that platform	B.	moves towards the axis of rotation
C.	extends his arms outwards	D.	take out his coat and throws away

175.

Water rises in a capillary tube to a height h. It will rise to a height more than h.

A.	on the surface of moon	B.	at the poles
C.	in a lift moving up with an acceleration	D.	in all the above cases

176.

Which of the following statement is false?

A.	The density of milk decreases when cream is taken out of milk	B.	A cyclist should move along a zig-zag path while ascending a steep hill
C.	The linear velocity of bodies near the earth's equator (due to rotation of earth) is more than the velocities of particles at the pole	D.	The potential energy of a particle has the form Ep = k2x. The force acting on the particle is constant (k is a constant)

177.

If the distance to electric train is given by Fr = a + bv + cv2 In this equation constant c is likely to cover

A.	air resistance	B.	frictional resistance
C.	flange resistance	D.	track resistance

178.

The dimensions of modulus of elasticity are

A.	MLT-1	B.	MLT-2
C.	ML-1T-2	D.	ML-2T-1

179.

The dimensions of power are

A.	ML2T2	B.	MLT3
C.	ML2T3	D.	ML2T-3

180.

ML2T-2 could be the dimension of

A.	viscosity	B.	moment of force
C.	momentum	D.	mass moment of inertia