1
MHT CET 2022 11th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

A parallel beam of monochromatic light falls normally on a single narrow slit. The angular width of the central maximum in the resulting diffraction pattern

A
decreases with increase of slitwidth
B
may increase or decrease
C
decreases with decrease of slitwidth
D
increases with increase in slitwidth
2
MHT CET 2022 11th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a Fraunhofer diffraction at a single slit of width 'd' and incident light of wavelength $$5500 \mathop A\limits^o$$, the first minimum is observed at an angle $$30^{\circ}$$. The first secondary maxima is observed at an angle $$\theta$$, equal to

A
$$\sin ^{-1}\left(\frac{1}{4}\right)$$
B
$$\sin ^{-1}\left(\frac{3}{4}\right)$$
C
$$\sin ^{-1}\left(\frac{\sqrt{3}}{2}\right)$$
D
$$\sin ^{-1}\left(\frac{1}{\sqrt{2}}\right)$$
3
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two monochromatic beams of intensities I and 4 I respectively are superposed to form a steady interference pattern. The maximum and minimum intensities in the pattern are

A
$$4 \mathrm{I}$$ and I
B
9 I and 3I
C
5 I and 3 I
D
9 I and I
4
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The path difference between two interfering light waves meeting at a point on the screen is $$\left(\frac{57}{2}\right) \lambda$$. The bond obtained at that point is

A
29th bright band
B
57th dark band
C
57th bright band
D
29th dark band
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