NEET 2021 | Geometrical Optics Question 20 | Physics

A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from it, the final image would be formed at a distance of -

NEET 2021 Physics - Geometrical Optics Question 18 English

NEET 2021 Physics - Geometrical Optics Question 18 English

20 cm from the plane mirror, it would be a virtual image.

20 cm from the lens, it would be a real image.

30 cm from the lens, it would be a real image.

30 cm from the plane mirror, it would be a virtual image.

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is $$\mu $$, then the angle of incidence is nearly equal to :

$${{2A} \over \mu }$$

$$\mu $$A

$${{\mu A} \over 2}$$

$${A \over {2\mu }}$$

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

The Brewster's angle i_b for an interface should be :

30$$^\circ $$ < i_b< 45$$^\circ $$

45$$^\circ $$ < i_b< 90$$^\circ $$

i_b = 90$$^\circ $$

0$$^\circ $$ < i_b< 30$$^\circ $$

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