1
MHT CET 2021 22th September Morning Shift
+1
-0

A single slit diffraction pattern is formed with white light. For what wavelength of light the $$3^{\text {rd }}$$ secondary maximum in diffraction pattern coincides with the $$2^{\text {nd }}$$ secondary maximum in the pattern of red light of wavelength 6000 $$\mathop A\limits^o$$ ?

A
4500 $$\mathop A\limits^o$$
B
3500 $$\mathop A\limits^o$$
C
4000 $$\mathop A\limits^o$$
D
5000 $$\mathop A\limits^o$$
2
MHT CET 2021 22th September Morning Shift
+1
-0

The width of central maximum of a diffraction pattern on a single slit does not depend upon

A
frequency of light used
B
width of the slit
C
distance between slit and source
D
wavelength of light used
3
MHT CET 2021 21th September Evening Shift
+1
-0

Two coherent sources of wavelength '$$\lambda$$' produce steady interference pattern. The path difference corresponding to 10$$^{th}$$ order maximum will be

A
9.5 $$\lambda$$
B
10.5 $$\lambda$$
C
9 $$\lambda$$
D
10 $$\lambda$$
4
MHT CET 2021 21th September Evening Shift
+1
-0

In Young's experiment, fringes are obtained on a screen placed at a distance $$75 \mathrm{~cm}$$ from the slits. When the separation between two narrow slits is doubled, then the fringe width is decreased. In order to obtain the initial fringe width, the screen should be moved through.

A
$$150 \mathrm{~cm}$$ away from the slits.
B
$$75 \mathrm{~cm}$$ towards the slits.
C
$$75 \mathrm{~cm}$$ away from slits.
D
$$150 \mathrm{~cm}$$ towards the slits.
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