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प्रश्न
A ray of light goes from water into air. Will it bend towards the normal or away from the normal?
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उत्तर
When a ray of light travels from a denser medium (water) to a rarer medium (air), it bends away from the normal. Therefore, the ray of light will bend away from the normal in the given case.
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संबंधित प्रश्न
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State two factors on which the lateral displacement of the emergent ray depends.
When a ray of light travelling in glass enters into water obliquely:
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(c) it goes along the normal
(d) it is refracted away from the normal
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What is the angle of incidence?
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to produce a large amount of bending?
Light travels at a lower speed in water than in air.
Fill in the blank and Explain the completed sentences.
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Write scientific reason.
The bottom of a pond appears raised.
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Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged.

Her friend noted the following observations from this demonstration:
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- Air and glass allow light to pass through them with the same velocity.
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- The ratio: sin of angle of incidence in the first medium to the ratio of sin of angle of refraction in the second medium, gives the refractive index of the second material with respect to the first one.
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