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Question

Assertion

The light travelling from air to glass can suffer total internal reflection

Reason

Air is denser than glass.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

C

Assertion is correct but Reason is incorrect

D

Both Assertion and Reason are incorrect

Medium

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Solution

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Correct option is D)

Only a ray travelling from denser to rarer medium will go through total internal reflection. Air is rare than glass.
$s i n C = \frac{n _{1}}{n _{2}}$ , where C is critical angle and $n_{2}$ is refractive index for denser medium and $n_{1}$ is of rarer medium.

Both Assertion and Reason are incorrect..

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Light travels from diamond to glass, glass to water and water to air. In this context when can total internal reflection take place ?
(i) When light travels from diamond to glass.
(ii) When light travels from glass to water.
(iii) When light travels from water to air.

Total internal reflection occurs when light travel from :

A ray is incident from outside on a glass sphere surrounded by air as shown in fig. This ray may suffer total internal reflection at the second interface.

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Light travels from diamond to glass, glass to water and water to all. In this context when does total internal reflection may take place?
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Select the correct answer from the codes given.

STATEMENT-1 : A ray is incident from outside on a glass sphere surrounded by air as shown. This ray may suffer total internal reflection at second interface.
STATEMENT 2 : For a ray going from denser to rarer medium, the ray may suffer total internal reflection.

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