MHT CET 2021 20th September Morning Shift | Ray Optics Question 45 | Physics

A ray of light travels from a denser medium to a rarer medium. The reflected and the refracted rays are perpendicular to each other. If '$$r$$' and '$$r_1$$' are the angle of reflection and refraction respectively and '$$\mathrm{C}$$' is the critical angle, then the angle of incidence is

$$\cot ^{-1}(\sin \mathrm{C})$$

$$\sin ^{-1}(\tan C)$$

$$\tan ^{-1}(\sin C)$$

$$\cos ^{-1}(\tan \mathrm{C})$$

MHT CET 2021 20th September Morning Shift

MCQ (Single Correct Answer)

-0

A convex lens of focal length 'F' produces a real image 'n' times the size of the object. The image distance is

F(n + 1)

F(n $$-$$ 1)

$$\mathrm{\frac{F}{(N+1)}}$$

$$\mathrm{\frac{F}{(n-1)}}$$

MHT CET 2020 16th October Evening Shift

MCQ (Single Correct Answer)

-0

There are four convex lenses $$L_1, L_2, L_3$$ and $$L_4$$ of focal length $$2,4,6$$ and 8 cm, respectively. Two of these lenses from a telescope of length 10 cm and magnifying power 4. The objective and eye lenses are respectively

$$L_1, L_2$$

$$L_1, L_4$$

$$L_2, L_3$$

$$L_4, L_1$$

MHT CET 2020 16th October Evening Shift

MCQ (Single Correct Answer)

-0

Refractive index of the medium is $$\mu$$ and wavelength is $$\lambda$$, then which of the following proportionality relation is correct?

$$\mu \propto \lambda^2$$

$$\mu \propto \frac{1}{\lambda}$$

$$\mu \propto \lambda$$

$$\mu \propto \frac{1}{\lambda^2}$$

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