MHT CET 2020 16th October Evening Shift | Wave Optics Question 137 | Physics

A light wave of wavelength $$\lambda$$ is incident on a slit of width $$d$$. The resulting diffraction pattern is observed on a screen at a distance $$D$$. If linear width of the principal maxima is equal to the width of the slit, then the distance $$D$$ is

$$\frac{2 \lambda}{d}$$

$$\frac{d^2}{2 \lambda}$$

$$\frac{2 \lambda^2}{d}$$

$$\frac{d}{\lambda}$$

MHT CET 2020 16th October Evening Shift

MCQ (Single Correct Answer)

-0

When wavelength of light used in optical instruments A and B are 4500$$\mathop A\limits^o $$ and 6000$$\mathop A\limits^o $$ respectively, the ratio of resolving power of A to B will be

9 : 16

16 : 9

7 : 1

4 : 3

MHT CET 2020 16th October Morning Shift

MCQ (Single Correct Answer)

-0

In diffraction experiment, from a single slit, the angular width of the central maxima does not depend upon

ratio of wavelength and slit width

distance of the slit from the screen

wavelength of light used

width of the slit

MHT CET 2020 16th October Morning Shift

MCQ (Single Correct Answer)

-0

In Young's double slit experiment green light is incident on the two slits. The interference pattern is observed on a screen. Which one of the following changes would cause the observed fringes to be more closely spaced?

Moving the screen away from the slits

Using blue light instead of green light

Using red light instead of green light

Reducing the separation between the slits

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