MHT CET 2021 24th September Evening Shift | Ray Optics Question 75 | Physics

A ray of light is incident on one face of an equilateral glass prism having refractive index $$\sqrt{2}$$. It produces the emergent ray which just. grazes along the adjacent face. The value of angle of incidence is $$\left(\sin 45^{\circ}=\cos 45^{\circ}=\frac{1}{\sqrt{2}}\right)$$

$$\sin ^{-1}\left(\frac{1}{\sqrt{2}} \sin 15^{\circ}\right)$$

$$\sin ^{-1}\left(\sqrt{2} \sin 30^{\circ}\right)$$

$$\sin ^{-1}\left(\frac{1}{\sqrt{2}} \sin 45^{\circ}\right)$$

$$\sin ^{-1}\left(\sqrt{2} \sin 15^{\circ}\right)$$

MHT CET 2021 24th September Evening Shift

MCQ (Single Correct Answer)

-0

White light consists of wavelengths from $$480 \mathrm{~nm}$$ to $$672 \mathrm{~nm}$$. What will be the wavelength range when white light is passed through glass of refractive index 1.6?

$$420 \mathrm{~nm}-672 \mathrm{~nm}$$

$$300 \mathrm{~nm}-480 \mathrm{~nm}$$

$$300 \mathrm{~nm}-420 \mathrm{~nm}$$

$$300 \mathrm{~nm}-672 \mathrm{~nm}$$

MHT CET 2021 24th September Evening Shift

MCQ (Single Correct Answer)

-0

A monochromatic ray of light travels through glass slab and water column. The number of waves in glass slab of thickness $$4 \mathrm{~cm}$$ is the same as in water column of height $$5 \mathrm{~cm}$$. If refractive index of glass is $$\frac{5}{3}$$ then refractive index of water is

1.33

1.30

1.25

1.10

MHT CET 2021 24th September Morning Shift

MCQ (Single Correct Answer)

-0

The radii of curvature of both the surfaces of a convex lens of focal length '$$\mathrm{f}$$' and focal power '$$\mathrm{P}$$' are equal. One of the surfaces is made plane by grinding. The new focal length and focal power of the lens is respectively

$$\frac{1}{2}, 2$$

$$2 \mathrm{f}, \frac{\mathrm{P}}{2}$$

$$\sqrt{\frac{2}{f}}, \sqrt{\frac{P}{2}}$$

$$\frac{2 \mathrm{f}}{3}, \frac{2}{3} \mathrm{P}$$

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