Physics Practice MCQ Page 10

Multiple Choice questions for Physics in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 364   With the help of dimensions method it can be proved that frequency of a stretched wire
  1. Does not depend on the mass of the wire
  2. Depends on the displacement of the wire
  3. Depends on the mass of the wire
  4. None of these
Question: 365   When a body undergoes an acceleration,
  1. its velocity increases
  2. its speed increases
  3. it falls toward the earth
  4. a force acts upon it
Question: 366  
  1. A force of 100 dynes acts for 10 seconds on a body of mass 500g. What is the change in momentum?
  2. 10 C.G.S units
  3. 100 C.G.S units
  4. 1000 C.G.S units
  5. 5000 C.G.S units
Question: 367   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
  1. 2 m/s
  2. 6 m/s
  3. 20 m/s
  4. 0.2 m/s
Question: 368   If the earth stopped rotating, the weight of objects at the equator would
  1. be greater
  2. be the same as before
  3. be less
  4. very with latitude
Question: 369   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
  1. 28,000 km/hr
  2. 21,000 km/hr
  3. 40,000 km/hr
  4. 64,000 km/hr
Question: 370   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?
  1. 80 m/s
  2. 40 m/s
  3. 60 m/s
  4. 100 m/s
Question: 371   The static friction is
  1. always greater than the dynamic friction
  2. always less than the dynamic friction
  3. equal to the dynamic friction
  4. sometimes greater and sometimes less than the dynamic friction
Question: 372   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
  1. 1:2
  2. 2:1
  3. 1:8
  4. 8:1
Question: 373   The pressure at the bottom of a tank of liquid is not proportional to
  1. the density of the liquid
  2. the area of the liquid surface
  3. the height of the liquid
  4. the acceleration
Question: 374   What is the shape of the liquid meniscus in a capillary tube placed in a liquid that wets the surface of the tube?
  1. Flat
  2. Concave downwards
  3. Convex up
  4. None of the above is correct
Question: 375   A piece of weighted wood just floats in water. When place3d in alcohol (of lower density) it will
  1. float lower
  2. float higher
  3. stay as before
  4. sink

Answers to the questions of Physics on this page

Following list gives the correct choice for the answer of the Physics mcqs.
364 . C       365 . D       366 . D       367 . A       368 . A       369 . C       370 . B       371 . D       372 . C       373 . B       374 . A       375 . A      

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