set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

The nature of radiation of light is

a) Like both of wave and particle

b) Like particle

c) Like wave

d) Like neither of wave nor of particle

Question : 2

A bimetallic strip consists of brass and iron. When it is heated it bends into an arc with brass on the convex and iron on the concave side of the arc. This happens because

a) it is easier to bend an iron strip than a brass strip of the same size

b) brass has a higher specific heat capacity than iron

c) density of brass is more than that of iron

d) brass has a higher coefficient of linear expansion than iron

Question : 3

Which one of the following changes occurs when salt is added into the water?

a) Boiling point is decreased and freezing point is increased

b) Both boiling point and freezing point are decreased

c) Boiling point is increased and freezing point is decreased

d) Both boiling point and freezing point are increased

Question : 4

Assertion (A):
Reveraberation mainly feels in large churches and in other large buildings.
Reason (R):
The walls, roof and ground may cause multiple sound reflections.
Code

a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

b) (A) is true, but (R) is false

c) Both (A) and (R) are true and (R) is the correct explanation of (A)

d) (A) is false, but (R) is true

Question : 5

Match the Column - I and Column - II

a) A-Q; B-P; C-T; D-R; E-S

b) A-Q; B-P; C-T; D-S; E-R

c) A-P; B-Q; C-T; D-R; E-S

d) A-Q; B-T; C-P; D-R; E-S

Question : 6

_____ is the characteristic of a musical sound by which a loud sound can be distinguished from a faint sound even though both have the same pitch.

a) Quality

b) Loundness

c) Pitch

d) None of these