set 6 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

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 : 3

Match List - I with List - II:

a) A – 4, B – 1, C – 2, D – 3

b) A – 2, B – 1, C – 4, D – 3

c) A – 2, B – 3, C – 4, D – 1

d) A – 3, B – 4, C – 1, D – 2

Question : 4

Food in the pressure cooker is cooked faster, as

a) more steam is available at 100°C

b) the boiling point increases due to an increase in pressure

c) the boiling point decreases due to an increase in pressure

d) more pressure is available at 100°C

Question : 5

When ice melts, then

a) Volume decreases

b) Mass increases

c) Volume increases

d) Mass decreases

Question : 6

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