After tracing the path of a ray of light through a glass prism a student marked the angle of incidence ( $∠$ i), angle of refraction ( $∠$ r) angle of emergence ( $∠$ e) and the angle of deviation ( $∠$ D) as shown in the diagram. The correctly marked angles are:

∠i and ∠r

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∠i and ∠e

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∠i, ∠e and ∠D

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∠i, ∠r and ∠e

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Solution

The correct option is B
∠i and ∠e

In the given diagram, the angle of incidence ( $∠$ i) and the angle of emergence ( $∠$ e) have been correctly marked.
Hence, the correct option is B.
Disclaimer: In the question paper the angle of emergence $∠$ e is drawn incorrectly as it is shown between the normal and the surface of the prism.

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Similar questions

A student traces the path of a ray of white light through a rectangular glass slab and marks, the angles of incidence $(∠ i)$ refraction $(∠ r)$ and emergence $(∠ e)$ as shown. Which angle or angles has he not marked correctly?

Q. A student traces the path of a ray of light passing through a rectangular glass slab and marks the angle of incidence i, angle of refraction r and angle of emergence e, as shown. The correctly marked angle(s) is /are:

Q. A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence (∠i). He then measures the corresponding values of the angle of refraction (∠r) and the angle of emergence (∠e) for every value of the angle of incidence. On analyzing the measurements of these angles, his conclusion would be:

Q. In the following ray diagram the correctly marked angle are :

(a)

∠ i

and

∠ e

(b)

∠ A

and

∠ D

(c)

∠ i, ∠ e

and

∠ D

(d)

∠ r, ∠ A

and

∠ D

Q. After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below:

S.No.	$∠ i$	$∠ r$	$∠ e$
I	$30^{o}$	$20^{o}$	$31^{o}$
II	$40^{o}$	$25^{o}$	$40^{o}$
III	$50^{o}$	$31^{o}$	$49^{o}$

The correct observations are:

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After tracing the path of a ray of light through a glass prism a student marked the angle of incidence (∠i), angle of refraction (∠ r) angle of emergence (∠e) and the angle of deviation (∠D) as shown in the diagram. The correctly marked angles are:

After tracing the path of a ray of light through a glass prism a student marked the angle of incidence ( $∠$ i), angle of refraction ( $∠$ r) angle of emergence ( $∠$ e) and the angle of deviation ( $∠$ D) as shown in the diagram. The correctly marked angles are: