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प्रश्न
Light travels more quickly through water than through glass.
Which is optically denser : water or glass?
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उत्तर
Glass is optically denser as compared to water.
(Speed of light in an optically rarer medium is more than the speed of light in a denser medium.)
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संबंधित प्रश्न
If an object is placed at a distance of 10 cm in from of a plane mirror, how far would it be from its image?
Where is the image when you look at something in a mirror?
What is lateral inversion? Explain by giving a suitable example.
State the uses of plane mirrors.
The image in a plane mirror is virtual and laterally inverted. What does this statement mean?
The figure given alongside shows the image of a clock as seen a plane mirror. The correct time is:
Figure
(a) 2.25
(b) 2.35
(c) 6.45
(d) 9.25
An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the positions of the original and final images seen in the mirror is ______.
A man sits in an optician's chair looking into plane mirror which is 2 m away from him and views the image of a chart which faces the mirror and is 50 cm behind his head. How far away from his eyes does the chart appear to be?
A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is ______.
If a ray of light goes form a denser medium to a rarer medium, will it bend towards the normal or away from the normal?
In which material do you think light rays travel faster-glass or air?
Why does a ray of light bend when it travels from one medium to another?
Water is optically denser than glass.
Light travels at a lower speed in water than in air.
Match the Following
| Column A | Column B |
| (a) white Light | (1) Convex mirror |
| (b) Refraction | (2) Concave mirror |
| (c) Virtual images | (3) refraction |
| (d) Real images | (4) spectrum |
| (e) Prism | (5) ray of light from glass to air |
You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?
The angle of incidence for a ray of light having zero reflection angle is ______.
When light passes from one medium to another the ray gets bent. This property of light is called ______.
Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.
