NEET 2022 Phase 2 | Optics Question 12 | Physics

After passing through a polariser a linearly polarised light of intensity I is incident on an analyser making an angle of 30$$^\circ$$ with that of the polariser. The intensity of light emitted from the analyser will be

$${{2I} \over 3}$$

$${I \over 2}$$

$${I \over 3}$$

$${{3I} \over 4}$$

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

An astronomical refracting telescope is being used by an observer to observe planets in normal adjustment. The focal lengths of the objective and eye piece used in the construction of the telescope are 20 m and 2 cm respectively. Consider the following statements about the telescope :

(a) The distance between the objective and eye piece is 20.02 m

(b) The magnification of the telescope is ($$-$$) 1000

(d) The aperture of eye piece is smaller than that of objective

The correct statements are :

(a), (b) and (d)

(a), (b) and (c)

(b), (c) and (d)

(c), (d) and (a)

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

A biconvex lens has radii of curvature, 20 cm each. If the refractive index of the material of the lens is 1.5, the power of the lens is

+2 D

+20 D

+5 D

Infinity

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

In a Young's double slit experiment, a student observes 8 fringes in a certain segment of screen when a monochromatic light of 600 nm wavelength is used. If the wavelength of light is changed to 400 nm, then the number of fringes he would observe in the same region of the screen is

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