| 1 |
The device used to stop conduction, convention and radiation: |
- A. Thermometer
- B. Thermo flask
- C. Both
- D. Nil
|
| 2 |
Sin 45 is equal to: |
- A. Zero
- B. 0.5
- C. 0.707
- D. 1
|
| 3 |
If heat Q flows in time 't' through some metal then rate of flow of heat is defined as |
- A. Flow of heat = 2Qt
- B. Flow of heat = Q/t
- C. Flow of heat = t/Q
- D. Flow of heat = Qt
|
| 4 |
In symbols, Newton's second law of motion is stated as |
- A. F = m/a
- B. F = ma
- C. F = a/m
- D. F = ma<sup>2</sup>
|
| 5 |
It base of a right angled triangle is 3 cm and its perpendicular is 3 cm.Then its hypotenuse will be |
- A. 2 cm
- B. 4 cm
- C. 6 cm
- D. 5 cm
|
| 6 |
Co-efficient of friction between iron and iron is: |
- A. 1.0
- B. 0.62
- C. 0.9
- D. 1.2
|
| 7 |
Worst absorber of heat is: |
- A. Dull black surface
- B. Coloured surface
- C. Shinning silvered surface
- D. White surface
|
| 8 |
The work done in lifting a brick of mass 2 kg through a height of 5 m above ground will be: |
- A. 2.5 J
- B. 10 J
- C. 50 J
- D. 100 J
|
| 9 |
Weight of the body when we increase its height from earth's surface. |
- A. Increase
- B. Decrease
- C. Remain constant
- D. None
|
| 10 |
In screw gauge if zero of circular scale is behind the index line is called error. |
- A. Positive
- B. Zero
- C. Negative
- D. None of these
|