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प्रश्न
Name two natural sources of light.
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उत्तर
- Sun
- Stars
- Firefly
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संबंधित प्रश्न
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
Can a transparent medium form an image? Explain your answer.
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 |
Write true or false
Opaque objects do not allow light to pass through them.
A ______ is a natural source of light.
Light travels only in a______ It is because of this property that______ are formed.
a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is:
- at C
- between C and F
- between F and P of the mirror.
b) Mention the position and nature of image in each case.
If the energy of incident beam and the scattered beam is the same, then the scattering of light is called as ______ scattering.
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?
