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प्रश्न
The angle of deviation of light ray in a prism depends on the angle of ______.
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उत्तर
The angle of deviation of light ray in a prism depends on the angle of prism and angle of incident.
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संबंधित प्रश्न
Name a few living things which emit light.
Tick the correct answer.
Substance which don’t allow light to pass through them,
The sun and ______ are the natural sources of light.
Answer the following.
What is meant by luminous intensity? What is one lumen?
A ______ is an artificial source of light.
When light passes through a prism, it gets separated into ______ colours.
Write whether of the following objects are luminous or non-luminous.
| Object | Luminous/Non-luminous |
| A book | |
| A burning candle | |
| A wax cloth | |
| A pencil | |
| A pen | |
| A light bulb | |
| A tyre | |
| A torch |
_______ is the natural source that stimulates sight and makes things visible.
Match the following.
| 1. | Ratio of height of image to height of object. | Concave mirror |
| 2. | Used in hairpin bends in mountains. | Total internal reflection |
| 3. | Coin inside water appearing slightly raised. | Magnification |
| 4. | Mirage | Convex mirror |
| 5. | Used as Dentist’s mirror. | Refraction |
Velocity of light is greater in denser medium than in rarer medium
