In an equilateral prism- the angle of incidence is 450 and the angle of emergence is 550- The angle of deviation of the ray of light is

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Dispersion of Light

In an equilat...

Question

In an equilateral prism, the angle of incidence is 45⁰and the angle of emergence is 55⁰. The angle of deviation of the ray of light is

$45 °$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$40 °$

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

$35 °$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$50 °$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
$40 °$

An explanation for the correct option :
Step-1: Given
The angle of incidence, $i = 45 °$
The angle of emergence, $e = 55 °$
The angle of the equilateral prism, $A = 60 °$
The angle of deviation, $δ = ?$
Step-2: Calculation
Calculation of ' $δ$ ',
The angle of deviation is given by,
$δ = i + e - A$
Putting all the values in the formula above, we get
$\to δ = 45 ° + 55 ° - 60 °$
$\Rightarrow δ = 40 °$ =
Thus the angle of deviation is $40 °$ .
Hence, option (B) is the correct option.

Suggest Corrections

Similar questions

Write a relation for the angle of deviation $δ$ for a ray of light passing through an equilateral prism in terms of the angle of incidence (i_1), angle of emergence (i_2) and angle of prism (A).

A ray of light is incident on an equilateral glass prism placed in minimum deviation position.

How are angle of incidence and angle of emergence related to each other in this position of the prism?

Q. A ray of light passes through an equilateral prism (refractive index 1.5) such that angle of incidence is equal to angle of emergence and the latter is equal to

{3 / 4}^{t h}

of the angle of prism. The angle of deviation is

Q. A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and the latter is equal to

{\frac{3}{4}}^{t h}

angle of prism. What will be the deviation?

Join BYJU'S Learning Program

In an equilateral prism, the angle of incidence is 450 and the angle of emergence is 550. The angle of deviation of the ray of light is

In an equilateral prism, the angle of incidence is 45⁰and the angle of emergence is 55⁰. The angle of deviation of the ray of light is