A. The density
of the liquid
B. The area of the liquid surface
C. The height
of the liquid
D. The acceleration
92. What is the shape of the liquid meniscus
in a capillary tube placed in a liquid that wets the surface of the tube.?
A. Flat
B. Concave
downwards
C. Convex up
D. None of
the above is correct
93. A piece of weighted wood just floats in
water. When place3d in alcohol (of lower density)
it will.?
A. Float lower
B. Float higher
C. Stay as
before
D. Sink
94. A force of 100 dynes acts for 10 seconds
on a body of mass 500g. What is the change in momentum.?
A. 10 C.G.S
units
B. 100 C.G.S
units
C. 1000
C.G.S units
D. 5000 C.G.S units
95. A 40kg cart moving at 3 m/s makes a head
a head-on collision with a 20 kg cart at rest, as illustrated in Fig. 1.If the collision
is completely inelastic, the speed with winch the carts leave the impact
is approximately.?
A. 2 m/s
B. 6 m/s
C. 20 m/s
D. 0.2 m/s
96. If the earth stopped rotating, the weight
of objects at the equator would.?
A. Be greater
B. Be the
same as before
C. Be less
D. Very with
latitude
97. A satellite travels in a circular orbit
at a speed of 20,000 km/hr to stay at a constant altitude. To escape from the earth, the
speed would have to be increased to.?
A. 28,000
km/hr
B. 21,000
km/hr
C. 40,000 km/hr
D. 64,000
km/hr
98. A projectile is fired at an angle of 37°
with an initial speed of 100 m/s. What is the approximate versicle component of its velocity after 2s.?
A. 80 m/s
B. 40 m/s
C. 60 m/s
D. 100 m/s
99. Two pieces of wire of the same material
have their lengths in the ratio of 1:2 and diameters in the ratio of 2:1. If they are stretched by the
equal force, elongation will be int he ration of.?
A. 1:2
B. 2:1
C. 1:8
D. 8:1
100. With the help of dimensions method it can
be proved that frequency of a stretched wire.?
A. Does not
depend on the mass of the wire
B. Depends
on the displacement of the wire
C. Depends on the mass of the wire
D. None of
these
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