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प्रश्न
Select the correct alternative.
The luminous body is
पर्याय
a lighted bulb
earth
noon
table
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उत्तर
a lighted bulb
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संबंधित प्रश्न
Write true or false of the following statement.
We can see an object through an opaque medium.
Fill in the blank.
Light gives us the sensation of ................
Fill in the blank.
A medium which allows light to pass through it easily is called the ...................
The sun and ______ are the natural sources of light.
Write true or false
The moon has its own light.
Write true or false
The earth has its own light.
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 |
Describe the pictures.
State whether true or false. If false, correct the statement.
If a ray of light passes obliquely from one medium to another, it does not suffer any deviation.
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 |
