1
COMEDK 2024 Morning Shift
+1
-0

When a particular wave length of light is used the focal length of a convex mirror is found to be $$10 \mathrm{~cm}$$. If the wave length of the incident light is doubled keeping the area of the mirror constant, the focal length of the mirror will be:

A
5 cm
B
20 cm
C
15 cm
D
10 cm
2
COMEDK 2024 Morning Shift
+1
-0

For a $$30^{\circ}$$ prism when a ray of light is incident at an angle $$60^{\circ}$$ on one of its faces, the emergent ray passes normal to the other surface. Then the refractive index of the prism is:

A
$$\sqrt{3}$$
B
$$\frac{\sqrt{3}}{2}$$
C
1.5
D
1.33
3
COMEDK 2024 Morning Shift
+1
-0

A ray of light travelling through a medium of refractive index $$\frac{5}{4}$$ is incident on a glass of refractive index $$\frac{3}{2}$$. Find the angle of refraction in the glass, if the angle of incidence at the given medium - glass interface is $$30^{\circ}$$.

A
$$\sin ^{-1}\left(\frac{1}{2}\right)$$
B
$$\sin ^{-1}\left(\frac{1}{3}\right)$$
C
$$\sin ^{-1}\left(\frac{5}{12}\right)$$
D
$$\sin ^{-1}\left(\frac{6}{5}\right)$$
4
COMEDK 2023 Morning Shift
+1
-0

An air bubble in water $$\left(\mu=\frac{4}{3}\right)$$ is shown in figure. The apparent depth of the image of the bubble in plane mirror viewed by observer is.

A
16 cm
B
18 cm
C
24 cm
D
12 cm
EXAM MAP
Medical
NEET