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प्रश्न
Answer the following.
Write down five man-made sources of light.
एक पंक्ति में उत्तर
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उत्तर
Electric bulb, torch, an oil lamp, fluorescent tube, candle.
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संबंधित प्रश्न
Fill in the blank.
A medium which allows light to pass through it easily is called the ...................
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 |
Is the moon a luminous object?
Tick the correct answer.
Light causes
Tick the correct answer.
Substance which don’t allow light to pass through them,
Write true or false
The stars have no light.
A ______ is an artificial source of light.
_______ is the natural source that stimulates sight and makes things visible.
A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.
Light is a form of energy and it travels in a straight line.
