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Standard X

Physics

Refraction

A small air b...

Question

A small air bubble in a glass block, when seen from above, appears to be raised because of:

(a) refraction of light

(b) reflection of light

(c) reflection and refraction of light

(d) none of the above

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Solution

(b) refraction of light

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Similar questions

Q. A small air bubble in a glass block when seen from above appears to be raised because of:

Q. In above figure, a light ray in air is incident at angle

θ_{1}

on a block of transparent plastic with an index of refraction of

1.56

. The dimensions indicated are

H = 2.00 c m

and

W = 3.00 c m

. The light passes through the block to one of its sides and there undergoes reflection (inside the block) and possibly refraction (out into the air). This is the point of first reflection. The reflected light then passes through the block to another of its sides—a point of second reflection. If

θ_{1} = 40^{0}

, on which side is the point of (a) first reflection and (b) second reflection? If there is refraction at the point of (c) first reflection and (d) second reflection, give the angle of refraction; if not, answer “none.” If

θ_{1} = 70^{0}

, on which side is the point of (e) first reflection and (f) second reflection? If there is refraction at the point of (g) first reflection and (h) second reflection, give the angle of refraction; if not, answer “none.”

Q. How does refraction make the bottom of a glass filled with water appear to be raised when seen from above?

How is the reflection of light ray from a plane mirror different from the refraction of light ray as it enters a block of glass ?

Statement 1: on a hot day a straight road from a distance appears wet. This happens because of refraction.

Statement 2: on a hot day the air above the road in contact with the road is hotter and less dense therefore has less refractive index than the cool air above it. When light comes through denser medium to rarer medium(here cooler air to hotter air) it is internally reflected which makes the road appear wet and shiny.

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Refraction

Standard X Physics

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A small air bubble in a glass block, when seen from above, appears to be raised because of: (a) refraction of light (b) reflection of light (c) reflection and refraction of light (d) none of the above

(b) refraction of light

A small air bubble in a glass block, when seen from above, appears to be raised because of:

(a) refraction of light

(b) reflection of light

(c) reflection and refraction of light

(d) none of the above