1:
At a height of 108 m, the column of mercury falls by -------- cm

Options:

- 1
- 2
- 3
- 4

Answer: Option 1

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

2:
A frame made of metallic wire enclosing a surface area A is covered with a soap film. if the area of the frame of metallic wire is reduced by 50%, the energy of the soap film will be changed by

Options:

- 100%
- 75%
- 50%
- 25%

Answer: Option 3

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

3:
A capillary is dipped in water vessel kept on a freely falling lift, then

Options:

- water will not rise
- water will rise to the maximum available height of the tube
- water will rise to the height observed under normal condition
- water will rise to the height below that observed under normal condition

Answer: Option 4

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

4:
Surface tension of water at 1.2 atmospheric pressure

Options:

- more than 74 dyne /cm
- less than 74 dyne /cm
- same74 dyne /cm
- cannot say

Answer: Option 1

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

5:
Surface tension is an atomic / molecular property of

Options:

- atoms in the interior
- atoms which are exterior
- atoms at surface
- atoms at surface bounded entirely by different atoms

Answer: Option 3

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

6:
For different capillaries of radius r, the condition of liquid rise (h) to surface tension is

Options:

- rh = constant
- h/r = constant
- h+r = constant
- h-r = constant

Answer: Option 1

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

7:
Spherical balls of radius R and falling in a viscous fluid of viscosity T1 with a velocity v. The retarding viscous force acting on the spherical ball is

Options:

- directly proportional to R but inversely proportional to v
- directly proportional to both R and v
- inversely proportional to both R and v
- directly proportional to v but inversely proportional to R

Answer: Option 4

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

8:
If at some place the ratio of the amplitudes of two waves is 1:3, then the ratio of the maximum and minimum intensities after superposition will be

Options:

- 4:1
- 2:1
- 3:1
- 2:3

Answer: Option 1

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

9:
An air bubble of volume 1 cubic cm rises from the bottom of a lake 40m deep at at temperature of 12 degree Celsius. The volume of the bubble when it reaches the surface, which is at a temperature of 35 degree Celsius, will be ---- cubic cm.

Options:

- 5.4
- 4.9
- 2.0
- 1.08

Answer: Option 4

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough

10:
The pressure, temperature and volume of the gs contained in a vessel A are p, T and V respectively and the values of these parameters are p, T and 2V for a gas filled in a vessel B. The ratio of the number of molecules of the gas contained in the vessel A and vessel B will be

Options:

- 1:1
- 1:2
- 2:1
- 4:1

Answer: Option 2

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?
Very Easy
Easy
Average
Above Average
Tough