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प्रश्न
Fill in the blank
There are ........... and man-made ............ of light.
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उत्तर
There are natural and man-made sources of light.
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संबंधित प्रश्न
What do we call a substance through which light passes? Give an example of such a substance.
Fill in the blank
The brightness of light is measured in ...................
Fill in the blank
Speed of light in vacuum is .................
When light passes through a prism, it gets separated into ______ colours.
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.
Describe the pictures.
In going from a rarer to denser medium, the ray of light bends ______.
The mirror used in search light is ______.
If the energy of incident beam and the scattered beam is the same, then the scattering of light is called as ______ scattering.
Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image?
