# PHYSICS | Study Mode

Question 31
A
The rate of condensation is greater than that of vapourization
B
The rate of condensation is equal to that of vapourization
C
There is neither condensation nor vaporization of the liquid
D
The rate of condensation is less that that of vaporization

Question 32
A
13.300m
B
0.750m
C
1.013m
D
1.330m
##### Explanation
n = $$\frac{\text {Read depth}}{\text{Apparent depth}}$$ = 1.33 = $$\frac{Rd}{1}$$

Rd = 1.33 x 1 = 1.330m

Question 33
A
Reflection of light
B
Rectilinear propagation of light
C
Diffraction of light
D
Refraction of light

Question 34
A
Yellow
B
Blue
C
White
D
Red
##### Explanation

Question 35
A
Hot wire ammeter
B
Moving coil ammeter
C
Tangent galvanometer
D
Moving coil galvanometer
##### Explanation

Question 36
A
Electromagnetic waves are transverse
B
Transverse waves do not require a medium for propagation
C
Longitudinal waves vibrate perpendicular to the direction of travel
D
All mechanical waves are longitudinal
##### Explanation

Question 37
A
Centripetal forces only
B
Centripetal and frictional forces
C
Centrifugal forces only
D
Centripetal and centrifugal forces
##### Explanation

Question 38
A
Relative density of liquid
B
Pressure in liquids and gases
C
Humidity
D
Atmospheric pressure

Question 39
A
8.7N
B
37.0N
C
87.0N
D
13.0N
##### Explanation
Upthrust = Weight or water displaced
= 3.7 x 10 = 37N

Question 40
A

F = ma

B

F = m( $$\frac{v - u}{t}$$)

C

F = mg

D

F = mv - mu