MHT CET 2023 11th May Evening Shift | Wave Optics Question 19 | Physics

In Young's double slit experiment, the fifth maximum with wavelength '$$\lambda_1$$' is at a distance '$$y_1$$' and the same maximum with wavelength '$$\lambda_2$$' is at a distance '$$y_2$$' measured from the central bright band. Then $$\frac{y_1}{y_2}$$ is equal to [D and $$d$$ are constant]

$$\frac{\lambda_1}{\lambda_2}$$

$$\frac{\lambda_2}{\lambda_1}$$

$$\frac{\lambda_1^2}{\lambda_2^2}$$

$$\frac{\lambda_2^2}{\lambda_1^2}$$

MHT CET 2023 11th May Evening Shift

MCQ (Single Correct Answer)

-0

In Young's double slit experiment, green light is incident on 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?

Reducing the separation between the slits

Using blue light instead of green light

Using red light instead of green light

Moving the screen away from the slits

MHT CET 2023 11th May Morning Shift

MCQ (Single Correct Answer)

-0

A double slit experiment is immersed in water of refractive index 1.33. The slit separation is $$1 \mathrm{~mm}$$, distance between slit and screen is $$1.33 \mathrm{~m}$$ The slits are illuminated by a light of wavelength $$6300 \mathop A\limits^o$$. The fringe width is

$$4.9 \times 10^{-4} \mathrm{~m}$$

$$5.8 \times 10^{-4} \mathrm{~m}$$

$$6.3 \times 10^{-4} \mathrm{~m}$$

$$8.6 \times 10^{-4} \mathrm{~m}$$

MHT CET 2023 11th May Morning Shift

MCQ (Single Correct Answer)

-0

In the experiment of diffraction due to a single slit, if the slit width is decreased, the width of the central maximum

becomes zero.

does not change.

increases.

decreases.

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