set 6 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the following statements : If the same note is played on a flute and a sitar, one can still distinguish between them because they differ in

1. frequency
2. intensity
3. quality

a) 2 and 3 only

b) 1 and only

c) 3 only

d) 2 only

Question : 2

Which of the following processes result in cooling ?

1. Evaporation of liquid
2. Compression of gas
3. Shaking a liquid in a vessel
4. Adiabatic expansion of a gas

a) 2 and 3

b) 1 and 4

c) 1 and 3

d) 3 and 4

Question : 3

The splitting of white light into seven colours on passing through a glass prism is due to

a) interference

b) refraction

c) reflection

d) diffraction

Question : 4

When ice melts, then

a) Volume decreases

b) Mass increases

c) Volume increases

d) Mass decreases

Question : 5

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.

a) 1, 2 and 3

b) 1 and 2

c) 3 and 4

d) 2, 3 and 4

Question : 6

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