Advertisements
Advertisements
प्रश्न
Fill in the blank
Speed of light in vacuum is .................
Advertisements
उत्तर
Speed of light in vacuum is 300000 km/sec
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
Match the following columns
| Column A | Column B |
| a. Wooden block | i. new moon's day |
| b. Sun | ii. rectilinear propagation of light |
| c. Umbra | iii. opaque body |
| d. Eclipse | iv. luminous body |
| e. Solar eclipse | v. complete dark park |
What do we call a body that shines on its own?
The sun and ______ are the natural sources of light.
Match the following
| Column A | Column B |
| 1. Transparent object | i. Football |
| 2. Eclipses | ii. Glass |
| 3. Translucent object | iii. Fluorescent tube |
| 4. Luminous object | iv. Tracing paper |
| 5. Non - luminous object | v. Shadows |
Answer the following.
List four natural sources of light.
Describe the pictures.
Amount of light entering into the eye is controlled by ______.
What happens to light when it gets dispersed? Give an example.
Observe the picture given in the following figure carefully.
A patch of light is obtained at B, when the torch is lighted as shown. Which of the following is kept at position A to get this patch of light?
