| 1 |
Weight of a 60 kg man in moving elevator with constant acceleration of 1/2 f |
- A. Zero
- B. 300 N
- C. 600 N
- D. 200 N
|
| 2 |
A body has P.E. = mgh, when it is at height 'h' from the ground. At the point at the distance 'x' below from the top its P.E. with |
- A. mgh
- B. mgx
- C. mg(x-h)
- D. None of these
|
| 3 |
Which of the following is evidence of wave nature of light |
- A. Interference
- B. Diffraction
- C. Polarization
- D. All of these
|
| 4 |
The ballistic missiles are used only for |
- A. Long range
- B. Short range
- C. Medium range
- D. Constant range
|
| 5 |
For an ideal gas, the internal energy is directly proportional to. |
- A. Pressure
- B. volume
- C. Mass
- D. Temperature
|
| 6 |
When a body moves in circular motion, the angle between linear and angular velocity is. |
- A. 180<sup>o</sup>
- B. 90<sup>o</sup>
- C. 60<sup>o</sup>
- D. 75.3<sup>o</sup>
|
| 7 |
The magnifying power is also called |
- A. Resolving power
- B. Angular magnification
- C. Strength of eye
- D. None of these
|
| 8 |
The device used to study the spectra from different sources of light is |
- A. Telescope
- B. Optical fibre
- C. Spectrometer
- D. Microscope
|
| 9 |
If the tension a stretched string is made four times then the velocity of wave. |
- A. Remains same
- B. Is halved
- C. Becomes twice
- D. Becomes 4 times
|
| 10 |
Heat is form of. |
- A. Power
- B. Momentum
- C. Energy
- D. Torque
|