Wave Optics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 61 - 64 of 64

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Question number: 61

» Wave Optics » Diffraction Due to a Single Slit Width of Central Maximum

MCQ▾

Question

Width of slit is 0.3 mm Fraunhofer diffraction is observed in focus plane of lens of a lens of focal length 1 m. If third minima is at 5 mm distance from central maxima, then wavelength of light is-

Choices

Choice (4) Response

a.

5000 Å

b.

7000 Å

c.

6500 Å

d.

6000 Å

Question number: 62

» Wave Optics » Interference

Appeared in Year: 2016

MCQ▾

Question

The interference pattern is obtained with two coherent light source of intensity ratio . In the interference pattern, the ratio will be –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 63

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2016

MCQ▾

Question

A linear aperture whose width is is placed immediately in front of a lens of focal length . The aperture is illuminated normally by a parallel beam of wavelength . The distance of the first dark band of the diffraction pattern from the centre of the screen is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 64

» Wave Optics » Malus' Law and Its Application

Appeared in Year: 2017

MCQ▾

Question

Two polaroid’s and are placed with their axis perpendicular to each other. Unpolarized light is incident on . A third Polaroid is kept in between and such that its axis makes an angle with that of . The intensity of transmitted light though is:

Choices

Choice (4) Response

a.

b.

c.

d.

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