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प्रश्न
What is the refractive index of water
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उत्तर
1.33
संबंधित प्रश्न
When rays of light are incident on a glass slab then the incident ray and emergent ray are _________ each other.
- perpendicular
- parallel
- opposite
- concurrent
Name one factor that affects the lateral displacement of light as it passes through a rectangular glass slab.
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
Draw the diagram of refraction of light in the glass slab
A light ray in passing from water to a medium
(a) speeds up
(b) slows down. In each case, give one example of the medium.
An object is viewed through a glass prism with its vertex pointing upwards. It appears to be displaced upward. Explain the reason.
Fig shows a lens as a combination of a glass block and two prisms.
(i) Name the lens formed by the combination.
(ii) what is the XX' called?
(iii) Complete the ray diagram and show the path of the incident ray PQ after passing through the lens.
(iv) The final emergent ray will either meet XX' at a point or appear to come from a point on XX'. what is the point called?
Does the depth of a tank of water appear to change or remain the same when viewed normally from above?
A coin placed at the bottom of a beaker appears to be raised by 4.0 cm. If the refractive index of water is 4/3, find the depth of the water in the beaker.
