MHT CET 2021 20th September Morning Shift | Wave Optics Question 52 | Physics

In Fraunhofer diffraction pattern, slit width is 0.2 mm and screen is at 2m away from the lens. If wavelength of light used is 5000$$\mathop A\limits^o $$ then the distance between the first minimum on either side of the central maximum is ($$\theta$$ is small and measured in radian)

2 $$\times$$ 10$$^{-2}$$ m

10$$^{-1}$$ m

10$$^{-2}$$ m

10$$^{-3}$$ m

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

MHT CET 2020 16th October Morning Shift

MCQ (Single Correct Answer)

-0

When a photon enters glass from air, which one of the following quantity does not change?

Velocity

Wavelength

Momentum

Energy

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