Physics Practice MCQ Page 26
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: 3486 A 40-N block is supported by two ropes. One rope is horizontal and the other makes an angle of 30° with the ceiling. The tension in the rope attached tot he ceiling is approximately
- 80N
- 40N
- 34.6N
- 46.2N
Question: 3487 Let us assume that if the earth were three times farther from the sun than it is now the gravitational force exerted by the sun would be
- one ninth as large as it is now
- one third as large as it is now
- nine times as large as it is now
- three times as large as it is now
Question: 3488 The product of velocity and cross-sectional area for a liquid flowing through a pipe is a measure of the
- rate of flow
- volume of fluid
- fluid pressure
- none of these
Question: 3489 The shape of the mercury meniscus in glass container indicates that the
- cohesion between mercury molecules is greater than their adhesion to glass
- cohesion between mercury molecules is equal than their adhesion to glass
- cohesion between mercury molecules is greater than the cohesion of glass molecules
- cohesion between glass molecules is equal to the cohesion between mercury molecules
Question: 3490 Two glass plates having a little water in between cannot be easily seperated because of
- viscosity
- atmospheric pressure
- surface tension
- friction
Question: 3491 A projectile is fired horizontally with an initial speed of 20 m/s. Its horizontal speed 3s later is
- 20 m/s
- 6.67 m/s
- 60 m/s
- 29.4 m/s
Question: 3492 For a moving observer, a stationary clock
- shows the same time as his moving clock
- appears to be slow
- appears to be fast
- appears to have stopped
Question: 3493 For the Bemoul's theorem to be applicable, the flow of the liquid should be
- rotational and liquid should be incompressible
- rotational and liquid should be compressible
- irrotational and liquid should be compressible
- irrotatonal and liquid should be compressible
Question: 3494 Assertion (A): A rain drop after falling through some height attains a constant velocity
Reason (R): Velocity of the viscous drag is just equal to its weight
- Both A and R are correct and R is the correct explanation of A
- Both A and R are correct but R is not correct explanation of A
- A is correct, but R is incorrect
- A is incorrect, but R is correct
Question: 3495 the shape of the water menscus in a glass container indicates that
- the cohesion of water to glass is greater than the cohesion between water molecules
- the cohesion between water molecules is greater than their adhesion to glass
- the adhesion of water to glass is greater than the cohesion between water molecules
- the cohesion between the glass molecules is equal to the cohesion between water molecules
Question: 3496 the shape of the water meniscus in a glass container indicates that
- the cohesion of water to glass is greater than the cohesion between water molecules
- the cohesion between water molecules is greater than their adhesion to glass
- the adhesion of water to glass is greater than the cohesion between water molecules
- the cohesion between the glass molecules is equal to the cohesion between water molecules
Question: 3497 the height of water at two identical dams is the same, but dam A holds back a lake containing 2 cubic miles of water while dam B holds back a lake containing 1 cubic mile of water. The ratio of the total force exerted on dam A to that exerted on dam is B
- 2
- 1
- 1/2
- 4
Answers to the questions of Physics on this page
Following list gives the correct choice for the answer of the Physics mcqs.
3486 . A
3487 . A
3488 . A
3489 . A
3490 . B
3491 . C
3492 . B
3493 . C
3494 . A
3495 . C
3496 . C
3497 . A
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MCQ for Practicing Subject Tests