| 1 |
Non -illuminated object that are illuminated by heating are called. |
- A. Transparent object
- B. Opaque object
- C. Burning object
- D. Semi transparent
|
| 2 |
Speed oflight travels is one second. |
- A. 200,000 km
- B. 300,000 km
- C. 400,000 km
- D. 500,000 km
|
| 3 |
The object through which light can pass completely. |
- A. Translucent
- B. Opaque
- C. Semi and opaque object
- D. Transparent
|
| 4 |
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
|
| 5 |
Which things are transparent objects. |
- A. Water
- B. Glass
- C. Air
- D. All of these
|
| 6 |
Which of the following sounds is called noise. |
- A. Sound of a flute
- B. Rusting of leaves
- C. Pressure horn
- D. Chirping of birds
|
| 7 |
Which thing is not bright. |
- A. Book
- B. Candle
- C. Bulb
- D. Sun
|
| 8 |
Which things are not transparent objects. |
- A. wood
- B. Metal
- C. Stone
- D. All of these
|
| 9 |
What one of the followig object emit its light. |
- A. Wood
- B. Brick
- C. Sun
- D. Soil
|
| 10 |
Light is the type of |
- A. Motion
- B. Accelration
- C. Energy
- D. Speed
|