1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1

$$\epsilon_0$$ and $$\mu_0$$ are the electric permittivity and magnetic permeability of free space respectively. If the corresponding quantities of a medium are $$2 ~\epsilon_0$$ and $$1.5 ~\mu_0$$ respectively, the refractive index of the medium will nearly be :

A
$$\sqrt{2}$$
B
$$\sqrt{3}$$
C
3
D
2
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1

A horizontal ray of light is incident on the right angled prism with prism angle $$6^{\circ}$$. If the refractive index of the material of the prism is 1.5 , then the angle of emergence will be:

A
$$9^{\circ}$$
B
$$10^{\circ}$$
C
$$4^{\circ}$$
D
$$6^{\circ}$$
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1

An object is mounted on a wall. Its image of equal size is to be obtained on a parallel wall with the help of a convex lens placed between these walls. The lens is kept at distance x in front of the second wall. The required focal length of the lens will be :

A
less than $$\frac{x}{4}$$
B
more than $$\frac{x}{4}$$ but less than $$\frac{x}{2}$$
C
$$\frac{x}{2}$$
D
$$\frac{x}{4}$$
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1

Light travels a distance $$\mathrm{x}$$ in time $$t_{1}$$ in air and $$10 \mathrm{x}$$ in time $$t_{2}$$ in another denser medium. What is the critical angle for this medium?

A
$$\sin ^{-1}\left(\frac{10 \mathrm{t}_{2}}{\mathrm{t}_{1}}\right)$$
B
$$\sin ^{-1}\left(\frac{t_{1}}{10 t_{2}}\right)$$
C
$$\sin ^{-1}\left(\frac{10 t_{1}}{t_{2}}\right)$$
D
$$\sin ^{-1}\left(\frac{t_{2}}{t_{1}}\right)$$
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