| 1 |
Which things are transparent objects. |
- A. Water
- B. Glass
- C. Air
- D. All of these
|
| 2 |
The speed of sound through air. |
- A. 340 meter per secod
- B. 1500 meter per second
- C. 5000 meter per second
- D. 500 meter per second
|
| 3 |
Light travels. |
- A. In straight line
- B. In the form of wave
- C. From time to time
- D. In the form of zig zag
|
| 4 |
The speed of sound through Iron. |
- A. 340 meter per second
- B. 1500 meter per second
- C. 5000 meter per second
- D. 500 meter per second
|
| 5 |
Which things are transparent object. |
- A. Water
- B. Glass
- C. Air
- D. All of these
|
| 6 |
Non -illuminated object that are illuminated by heating are called. |
- A. Transparent object
- B. Opaque object
- C. Burning object
- D. Semi transparent
|
| 7 |
The light from the sun reaches on the earth |
- A. 5 min
- B. 8 min
- C. 10 min
- D. 15 min
|
| 8 |
Which of the following object in luminous. |
- A. Book
- B. Candle
- C. Bulb
- D. Sun
|
| 9 |
What one of the followig object emit its light. |
- A. Wood
- B. Brick
- C. Sun
- D. Soil
|
| 10 |
Moon is |
- A. Luminous object
- B. Ligh emitting object
- C. Non-luminous object
- D. Opaque object
|
