1
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The rays of different colours fail to converge at a point after passing through a thick converging lens. This defect is called

A
spherical aberration
B
distortion
C
coma
D
chromatic aberration
2
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+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 $$\lambda$$
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+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.
4
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two coherent sources 'P' and 'Q' produce interference at point 'A' on the screen, where there is a dark band which is formed between 4th and 5th bright band. Wavelength of light used is 6000 $$\mathop A\limits^o $$. The path difference PA and QA is

A
$$\mathrm{3.6\times10^{-4}~cm}$$
B
$$\mathrm{3.2\times10^{-4}~cm}$$
C
$$\mathrm{2.4\times10^{-4}~cm}$$
D
$$\mathrm{2.7\times10^{-4}~cm}$$
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