Ray Optics Test

Result

Ray Optics Test - 140

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

When a ray of light is incident normally on one refracting surface of an equilateral prism (Refractive index of the material of the prism = 1.5)

A
Emerging ray is deviated by 30°

B
Emerging ray is deviated by 45°

C
Emerging ray just grazes the second refracting surface

D
The ray undergoes total internal reflection at the second refracting surface

Solution
Question 2
4 / -1

Consider the following two statements A and B and identify the correct choice in the given answers
A :Line spectra is due to atoms in gaseous state
B : Band spectra is due to molecules

A
Both A and B are false

B
A is true and B is false

C
A is false and B is true

D
Both A and B are true
Question 3
4 / -1

The angle of prism is 5° and its refractive indices for red and violet colours are 1.5 and 1.6 respectively. The angular dispersion produced by the prism is

A
7.75°

B
5°

C
0.5°

D
0.17°

Solution
Question 4
4 / -1

If the refractive angles of two prisms made of crown glass are 10° and 20° respectively, then the ratio of their colour deviation powers will be

A
1 : 1

B
2 : 1

C
4 : 1

D
1 : 2
Question 5
4 / -1

The nature of sun\'s spectrum is

A
Continuous spectrum with absorption lines

B
Line spectrum

C
The spectrum of the helium atom

D
Band spectrum
Question 6
4 / -1

For a prism of refractive index 1.732, the angle of minimum deviation is equal to the angle of the prism.The angle of the prism is

A
80°

B
70°

C
60°

D
50°

Solution
Question 7
4 / -1

When a glass prism of refracting angle 60° is immersed in a liquid its angle of minimum deviation is 30°. The critical angle of glass with respect to the liquid medium is

A
42°

B
45°

C
50°

D
52°

Solution
Question 8
4 / -1

Three prisms 1, 2 and 3 have the prism angle A = 60°, but their refractive indices are respectively 1.4, 1.5 and 1.6. If δ₁, δ₂, δ₃ be their respective angles of deviation then

A
δ₃>δ₂>δ₁

B
δ₁> δ₂> δ₃

C
δ₁ = δ₂ = δ₃

D
δ₂>δ₁>δ₃

Solution
Question 9
4 / -1

In the visible region the dispersive powers and the mean angular deviations for crown and flint glass prisms are ω, ω\' and d, d\' respectively. The condition for getting deviation without dispersion when the two prisms are combined is

A

B

C

D

Solution
Question 10
4 / -1

A ray of light passes through the equilateral prism such that angle of incidence is equal to the angle of emergence if the angle of incidence is 45°. The angle of deviation will be

A
15°

B
75°

C
60°

D
30°

Solution