Ray Optics Test

Result

Ray Optics Test - 41

Score
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Weekly Quiz Competition

Question 1
4 / -1

For four different transparent medium n₄₁ × n₃₂ × n₂₁ = ____________ .

A

B
n₄₁

C
n₁₄

D
Question 2
4 / -1

A Plane mirror produces a magnification of_____________.

A
0

B
+1

C
– 1

D
∞
Question 3
4 / -1

A ray light passes through four transparent media with refractive indices n₁, n₂₃, n₄ as shown in figure The surfaces of all media are parallel, if the emergent ray DE is parallel of the incident ray AB we must have_______________

A
n₁ = n₂

B
n₃ = n₄

C
n₁ = n₄

D
n₂ = n₃
Question 4
4 / -1

A convex lens forms a real image of an object for it s two different positions on a screen if height of the image in both cases be 16 cm and 4 cm then height of the object is__________cm.

A
– 4

B
4

C
– 8

D
8

Solution
Question 5
4 / -1

In shown figure two parallel rays incident on a mirror they are reflected as parallel rays as shown in the same figure what is the nature of the mirror ?

A
plane mirror

B
concave

C
convex

D
plane–concave
Question 6
4 / -1

The power of plane glass is__________.

A
∞

B
0

C
2D

D
4D
Question 7
4 / -1

A convex lens is made up of three different materials as shown in figure, for point object placed on its axis, the no. of images formed are__________.

A
4

B
2

C
3

D
1
Question 8
4 / -1

Two thin lenses of focal lengths f₁ and f₂ are co-axially placed incontact with each other then, the power of combination is__________.

A

B

C

D
Question 9
4 / -1

If thin prism of 5^o gives a deviation of 2^o then the refractive index of material of prism is_________.

A
1.4

B
1.5

C
1.6

D
1.0
Question 10
4 / -1

It is difficult to see through the fog because _________________

A
light is scattered by the droplets in the fog

B
fog absorbs light

C
refractive index of fog is infinity

D
light suffers tote internal reflection