light, heat, thermodynamics, wave motion, sound, optics & oscillations - Category wise Question and Answer Practice Test with Solutions

light, heat, thermodynamics, wave motion, sound, optics & oscillations PRACTICE TEST [16 - EXERCISES]

set 1

set 2

set 3

set 4

set 5

set 6

set 7

set 8

set 9

set 10

set 11

set 12

set 13

set 14

set 15

set 16

Question : 6 [RAS/RTS (Pre) 2007]

How much should minimum distance be between the source of sound and reflecting surface, so that an echo can be heard clearly?

a) 17 metre

b) 24 metre

c) 10 metre

d) 30 metre

Answer: (a)

Question : 7

A shrill sound has a ______ pitch and a dull sound has a _____ pitch.

a) low, low

b) high, low

c) low, high

d) high, high

Answer: (b)

Question : 8 [RAS/RTS (Pre) 1995]

The principle reason why it is better to have two eyes than one is that

a) It gives a man a type of vision known as mosaic vision

b) By having two eyes we can easily see in the dark as well in dim light

c) By having two eyes we can distinguish colour easily

d) It enhances distance and depth perception in us

Answer: (d)

Question : 9

Consider the following statements:

  1. Principle of superposition can be used for any physical quantity.
  2. Principle of superposition can be used only when amplitude of quantity is small.
  3. It is not possible to have interference between the waves produced by two independent sources of same frequency.
  4. For interference of two waves the phase difference between the waves remain constant.
Which of the statements given above are correct?

a) 1, 2 and 3

b) 1 and 2

c) 3 and 4

d) 2, 3 and 4

Answer: (a)

Principle of superposition is applicable in wave motion.

Question : 10 [UPPCS (Pre) 2012]

When ice melts, then

a) Volume decreases

b) Mass increases

c) Volume increases

d) Mass decreases

Answer: (a)

IMPORTANT general science mcq EXERCISES

set 6 Online Quiz

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