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प्रश्न
The depth of a pond when seen from above appears to be less.
विकल्प
True
False
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उत्तर
True.
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संबंधित प्रश्न
A ray of light strikes a plane mirror such that its angle of incidence is 30°. What angle does the reflected ray make with the mirror surface?
State the uses of plane mirrors.
Why does a ray of light bend when it travels from one medium to another?
What is meant by ‘refraction of light’?
What is meant by the ‘angle of incidence’ for a ray of light?
The refractive index of four substances A, B, C, and D are 1.31, 1.43, 1.33, 2.4 respectively. The speed of light is maximum in
The deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called ______.
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:
- Glass is optically rarer than air.
- Air and glass allow light to pass through them with the same velocity.
- Air is optically rarer than glass.
- Speed of light through a denser medium is faster than that of a rarer medium.
- 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.
Which one of the combinations of the above statements given below is correct.
How does the light travel?
The ratio of the sine of the angle of incidence to the sine of ______ is constant.
