set 11 MCQ Questions & Answers Detailed Explanation

Question : 1

The atmosphere exerts enormous pressure on us. But, we do not feel it because

a) We are used to it

b) Our bones are very strong and can withstand the pressure

c) Our blood exerts a pressure slightly more than that of the atmosphere

d) The surface area of our head is very small

Question : 2

There are four objects A, B, C and D. It is observed that A and B are in thermal equilibrium and C and D are also in thermal equilibrium. However, A and C are not in thermal equilibrium. We can conclude that –

a) B and D cannot be in thermal equilibrium

b) B and D are in thermal equilibrium

c) B and D could be in thermal equilibrium but might not be A and D

d) the zeroth law of thermodynamics does not apply here because there are more than three objects

Question : 3

Consider the following statements.

1. Some bodies may contract from heating
2. Water shows anomalous expansion.

a) Both (A) and (B) are true.

b) (A) is true and (B) is false

c) (A) is false and (B) is true.

d) Both (A) and (B) are false.

Question : 4

Consider the following statements.

1. A widely used musical scale called diatomic scale has seven frequencies.
2. The frequency of the tone Sa is 256 Hz and that of Ni is 512 Hz.

a) Only 2

b) Both 1 and 2

c) Only 1

d) Neither 1 nor 2

Question : 5

Butter paper is an example for ............. object.

a) an opaque

b) a transparent

c) a translucent

d) a luminous

Question : 6

Which waves cannot be transmitted through vacuum?

a) Sound

b) Heat

c) Light

d) Electromagnetic