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प्रश्न
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
विकल्प
dispersion
scattering
Refraction
Reflection
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उत्तर
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called Refraction.
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संबंधित प्रश्न
Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are ............ .
Where is the image when you look at something in a mirror?
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 ______.
State two effects caused by the refraction of light.
Name the phenomenon due to which a swimming pool appears less deep than it really is.
A ray of light passes from air into a block of glass. Does it bend towards the normal or away from it?
In which material do you think light rays travel faster-glass or air?
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
What is meant by the ‘angle of incidence’ for a ray of light?
Light travels more quickly through water than through glass.
- Which is optically denser: water or glass?
- If a ray of light passes from glass into water, which way will it bend: towards the normal or away from the normal?
When a light ray passes from air into glass, what happens to its speed? Draw a diagram to show which way the ray of light bends.
State two factors on which the lateral displacement of the emergent ray depends.
Light travelling from a denser medium to a rarer medium along a normal to the boundary:
(a) is refracted towards the normal
(b) is refracted away from the normal
(c) goes along the boundary
(d) is not refracted
When a ray of light travelling in glass enters into water obliquely ______.
A vertical ray of light strikes the horizontal surface of some water:
What is the angle of refraction?
A ray of light when passes from glass to air, bends towards the normal.
Define the principal focus of a concave mirror.
A real image is formed by the light rays after reflection or refraction when they:
- actually meet or intersect with each other.
- actually converge at a point.
- appear to meet when they are produced in the backward direction.
- appear to diverge from a point.
Which of the above statements are correct?
The speed of light varies in different media.
Write a scientific reason.
The coin disappears in a vessel as it is seen from a specific location. But as soon as the water is poured into the vessel to a certain level, the coin appears.
Assertion and reasoning type
- Assertion: If the refractive index of the medium is high (denser medium) the velocity of the light in that medium will be small
- Reason: Refractive index of the medium is inversely proportional to the velocity of the light
If a beam of red light and a beam of violet light are incident at the same angle on the inclined surface of a prism from air medium and produce angles of refraction r and v respectively, which of the following is correct?
Which object use the reflection of light?
How does the light travel?
Light bends as it passes from one medium to another. What is this phenomenon called?
Light travels fastest in a vacuum. Why?
The bending of light as it passes from one medium to another is called ______.
A ray of light traveling in medium 1 strikes and travels into another transparent medium 2. If the speed of light is greater in medium 1, the ray will ______.
The ratio of the sine of the angle of incidence to the sine of ______ is constant.
Why a pencil partly immersed in water appears to be bent at the water surface.
How do twinkling stars occur? (or) what is the cause of the twinkling of stars?
When a ray of light travels normal to the given surface, then the angle of refraction is ______.
The ray that enters the second medium after crossing the boundary is called the:
When a light ray passes from a denser medium to a rarer medium, it bends:
A larger refractive index of a medium means that light travels:
