Ray Optics Test

Result

Ray Optics Test - 84

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Weekly Quiz Competition

Question 1
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 twoprisms are combined is

A

B

C

D

Solution
Question 2
4 / -1

The solar spectrum during a complete solar eclipse is

A
Continuous

B
Emission line

C
Dark line

D
Dark band
Question 3
4 / -1

A given ray of light suffers minimum deviation in an equilateral prism P. Additional prisms Q and R of identical shape and material are now added to P as shown in the figure. The ray will suffer

A
Greater deviation

B
Same deviation

C
No deviation

D
Total internal reflection
Question 4
4 / -1

In the given figure, what is the angle of prism?

A
A

B
B

C
C

D
D
Question 5
4 / -1

A convex lens, a glass slab, a glass prism and a solid sphere all are made of the same glass, the dispersive power will be

A
In the glass slab and prism

B
In the lens and solid sphere

C
Only in prism

D
In all the four
Question 6
4 / -1

A parallel beam of white light falls on a convex lens. Images of blue, yellow and red light are formed on other side of the lens at a distance of 0.20 m, 0.205 m and 0.214 m respectively. The dispersive power of the material of the lens will be

A
619/1000

B
9/200

C
14/205

D
5/214

Solution
Question 7
4 / -1

The spectrum of an oil flame is an example for

A
Line emission spectrum

B
Continuous emission spectrum

C
Line absorption spectrum

D
Band emission spectrum
Question 8
4 / -1

In an equilateral prism if incident angle is 45° thenminimum deviation is

A
30°

B
60°

C
45°

D
90°

Solution
Question 9
4 / -1

For the myopic eye, the defect is cured by

A
Convex lens

B
Concave lens

C
Cylindrical lens

D
Toric lens

Solution
Question 10
4 / -1

Lens used to remove long sightedness (hypermetropia)is
or
A person suffering from hypermetropia requires which type of spectacle lenses

A
Concave lens

B
Plano-concave lens

C
Convexo-concave lens

D
Convex lens

Solution