MHT CET 2023 11th May Morning Shift | Ray Optics Question 54 | Physics

The prism has refracting angle '$$\mathrm{A}$$'. The second refracting surface of the prism is silvered. Light ray falling on first refracting surface with angle of incidence '$$2 \mathrm{~A}$$', reaches the second surface and returns back through the same path due to reflection at the silvered surface. The refractive index of the material of the prism is

$$\frac{1}{2} \sin \mathrm{A}$$

$$\frac{1}{2} \cos \mathrm{A}$$

$$2 \sin \mathrm{A}$$

$$2 \cos A$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

To get three images of a single object, the angle between the two plane mirrors should be

$$50^{\circ}$$

$$60^{\circ}$$

$$72^{\circ}$$

$$90^{\circ}$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

Two lenses of power $$-15 \mathrm{D}$$ and $$+5 \mathrm{D}$$ are in contact with each other. The focal length of the combination is

$$-0.1 \mathrm{~cm}$$

$$-10 \mathrm{~cm}$$

$$-20 \mathrm{~cm}$$

$$+10 \mathrm{~cm}$$

MHT CET 2023 10th May Morning Shift

MCQ (Single Correct Answer)

-0

Which of the following is NOT involved in the formation of secondary rainbow?

Refraction

Angular dispersion

Interference

Total internal reflection

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