MHT CET 2021 20th September Morning Shift | Ray Optics Question 88 | 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 19th October Evening Shift

MCQ (Single Correct Answer)

-0

A ray of light is incident at an angle $i$ on one face of a thin angled prism. The ray emerges normally from the other face. Refractive inder of the glass prims is $n$ and angle of prism is $A$. The value of $i$ is

$A n$

$A^2 n$

$A n^2$

$\frac{1}{A n}$

MHT CET 2020 19th October Evening Shift

MCQ (Single Correct Answer)

-0

An object is clearly seen through an astronomical telescope of length 50 cm . The focal lengths of its objective and eye-piece respectively, can be

5 cm and 45 cm

$-$45 cm and $-$5 cm

45 cm and $-$5 cm

45 cm and 5 cm

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