| 1 |
Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will |
- A. Decrease
- B. Unchanged
- C. Half
- D. Increases
|
| 2 |
The efficiency of any heat engine can never be |
- A. +ve
- B. 100%
- C. -ve
- D. None of these
|
| 3 |
The weight of an object an elevator moving down with an acceleration of 9.8 m/s2 will becomes |
- A. Half
- B. Double
- C. Unchanged
- D. Zero
|
| 4 |
An immediate source of energy for our body is: |
- A. mango
- B. <span style="color: rgb(32, 33, 36); font-family: arial, sans-serif; font-size: 32px;">Glucose</span>
- C. mushroom
- D. meat
|
| 5 |
The ability of reveal the minor details of an object under examination is called. |
- A. Resolving power
- B. Magnification
- C. Scattering
- D. Reflection
|
| 6 |
The fluid is said to be incompressible, if its density is. |
- A. Zero
- B. Very high
- C. Constant
- D. Very small
|
| 7 |
Not change in entropy of a system after one complete Carnot cycle is. |
- A. Positive
- B. Negative
- C. Zero
- D. None of these
|
| 8 |
Bending of light around the edges of an obstacle is called. |
- A. Refraction
- B. Polarization
- C. Interference
- D. Diffraction
|
| 9 |
The collision between the gas molecules is |
- A. Elastic
- B. Inelastic
- C. Both a and b
- D. None of these
|
| 10 |
A layer of rock holding water that allows water to percolate through it with pressure is called. |
- A. Geyeser
- B. Aquifer
- C. Stem vent
- D. Hot spring
|