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प्रश्न
Why do objects in a room become visible even if sunlight does not enter it?
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उत्तर
When the light falls on an object, it scatters even if the sunlight does not enter a room. due to scattered light., the object becomes visible.
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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.
Write true or false
The earth has its own light.
Answer the following.
What is light?
Answer the following.
Differentiate between luminous and non-Luminous objects.
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
Speed of light in air is 3 × 108 m s–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.
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 VB, VG, VR be the velocity of blue, green, and red light respectively in a glass prism, then which of the following statement gives the correct relation?
What happens to light when it gets dispersed? Give an example.
Look at the figure given in the following figure.
Will there be any difference in the shadow formed on the screen in A and B.
