Physics Practice MCQ Page 25
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: 567 The charge on a hyperon
- is always negative
- is always positive
- may be negative or positive
- is zero
Question: 568 Photoelectric effect supports quantum nature of light because
(A). there is minimum frequency of light below which no photoelectric are emitted
(B). the maximum kinetic energy of photoelectric depends only on the frequency of light and not on its intensity
(C).even when the metal surface is faintly illuminated, the photo electrons leave the surface immediately
(D). electric charge of the photo electrons is quantized
which of the above is/ are correct?
- only A is correct
- Both A and B is correct
- A.B and C is correct
- all the above are correct
Question: 580 Both ice and water has chemical compositions
- different
- same
- almost same
- nearly same
Question: 3479 The dimensional formula for kinetic energy is
- M2L2T
- ML2T-2
- ML2T
- M0L-1
Question: 3480 a certain physical quantity is calculated from the formula (π/3)h(a2-b2), where h, a and b are all lengths. The quantity being calculated is a
- velocity
- length
- area
- volume
Question: 3481 A force of 20N moves a 10kg block through a distance of 400 cm. the work done by the 20N force is
- 80,000 J
- 8000 J
- 80 J
- 80 N-m
Question: 3482 A force of 3Nacts perpendicularly to a force of 4N Their resultant has a magnitude of
- 7N
- 5N
- 1N
- 12N
Question: 3483 A block of wood resting on a table is pulled by two cords attached to it. One exerts a force of 100 gm, the other force of 50 gm. In order to get the greatest net force on the body, the two cords should be pulled
- in opposite direction
- in nearly opposite directions
- at right angles to each other
- in the same direction
Question: 3484 The normal acceleration of a point on the rim of a 3 m diameter fly wheel is a constant 15 m/s2. The angular speed of the fly wheel is (in radians/sec).
- 3.6
- 2.6
- 4.6
- 5.6
Question: 3485 A man is standing on spring scale in an elevator. When the elevator is at rest, scale reads 160 kg. When the elevator starts to move, the scale reads 140 kg. The elevator has a/an
- constant upward speed
- upward acceleration
- constant downward speed
- downward acceleration
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
Answers to the questions of Physics on this page
Following list gives the correct choice for the answer of the Physics mcqs.
567 . C
568 . D
580 . B
3479 . B
3480 . D
3481 . C
3482 . B
3483 . D
3484 . A
3485 . D
3486 . A
3487 . A
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MCQ for Practicing Subject Tests