| 1 |
As we go up the value of atmospheric pressure is |
- A. Decreased
- B. Increased
- C. Remain constnat
- D. None of these
|
| 2 |
The to and fro motion of a body about its mean position is known as |
- A. Vibratory motion
- B. Rotatory motion
- C. Circular motion
- D. Random motion
|
| 3 |
What happens to the thermal conductivity of a wall if its thickness is doubled? |
- A. Become double
- B. Remain the same
- C. Become half
- D. Become one fourth
|
| 4 |
The maximum value of friction is: |
- A. Kinetic friction
- B. Static friction
- C. Limiting friction
- D. Dynamic friction
|
| 5 |
More radiation is reflected by the surface. |
- A. White
- B. Coloured
- C. Black
- D. Rough
|
| 6 |
Which expands on heating? |
- A. Water
- B. Steel
- C. Copper
- D. All are true
|
| 7 |
The mathematical formula of thermal conductivity is |
- A. k =Q/t x L/A (T1 - T2)
- B. k =Q/t x L/A (T1 + T2)
- C. k =t/Q x L/A (T1 - T2)
- D. k =2Q/t x L/A (T1 + T2)
|
| 8 |
At sea level height if mercury is: |
- A. 1000 cm
- B. 10 cm
- C. 1m
- D. 76 cm
|
| 9 |
The value of g at a height one Earth's radius above the surface of the <div> Earth is:</div> |
- A. 2 g
- B. 1/2 g
- C. 1/3 g1
- D. 1/4 g
|
| 10 |
Hydro meter is used to measure: |
- A. Pressure
- B. Density
- C. Area
- D. Volume
|
