| 1 |
The object through which light can pass completely. |
- A. Translucent
- B. Opaque
- C. Semi and opaque object
- D. Transparent
|
| 2 |
Which of the following object in luminous. |
- A. Book
- B. Candle
- C. Bulb
- D. Sun
|
| 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 |
Speed oflight travels is one second. |
- A. 200,000 km
- B. 300,000 km
- C. 400,000 km
- D. 500,000 km
|
| 5 |
Which things are not transparent objects. |
- A. wood
- B. Metal
- C. Stone
- D. All of these
|
| 6 |
Speed of sound is maximum in |
- A. A metal wire
- B. Air
- C. Water
- D. Vacuum
|
| 7 |
Which things are transparent objects. |
- A. Water
- B. Glass
- C. Air
- D. All of these
|
| 8 |
The speed of sound through water. |
- A. 340 meter per second
- B. 1500 meter per second
- C. 5000 meter per second
- D. 500 meter per second
|
| 9 |
Which object reflect maximum light. |
- A. White paper
- B. Coloured paper
- C. Mirror
- D. Brick wall
|
| 10 |
Non -illuminated object that are illuminated by heating are called. |
- A. Transparent object
- B. Opaque object
- C. Burning object
- D. Semi transparent
|
