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प्रश्न
Select the correct alternative.
The luminous body is
विकल्प
a lighted bulb
earth
noon
table
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उत्तर
a lighted bulb
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संबंधित प्रश्न
Fill in the blank.
The sun is a ............... source of light.
Select the correct alternative.
The natural source of light is
How does light make an object visible?
What do you understand by candle power?
Tick the correct answer.
Light is a font of
Tick the correct answer
Glass is
Tick the correct answer.
Substance which don’t allow light to pass through them,
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 ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.
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?
