1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

A monochromatic light of wavelength $$800 \mathrm{~nm}$$ is incident normally on a single slit of width $$0.020 \mathrm{~mm}$$ to produce a diffraction pattern on a screen placed $$1 \mathrm{~m}$$ away. Estimate the number of fringes obtained in Young's double slit experiment with slit separation $$0.20 \mathrm{~mm}$$, which can be accommodated within the range of total angular spread of the central maximum due to single slit.

A
25
B
30
C
20
D
15
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Incident light of wavelength $$\lambda=800 \mathrm{~nm}$$ produces a diffraction pattern on a screen $$1.5 \mathrm{~m}$$ away when it passes through a single slit of width $$0.5 \mathrm{~mm}$$. The distance between the first dark fringes on either side of the central bright fringe is

A
2.4 mm
B
2.4 cm
C
4.8 cm
D
4.8 mm
3
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

A slit of width $$10 \times 10^{-7} \mathrm{~m}$$ is illuminated by light of wavelength $$500 \mathrm{~nm}$$. Angular position of the first minimum is

A
$$\frac{1}{2}^0$$
B
30$$^\circ$$
C
1$$^\circ$$
D
60$$^\circ$$
4
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

In Young's double slit experiment the ratio of phase difference between light waves reaching the third bright fringe and third dark fringe is

A
$$\frac{4}{3}$$
B
$$\frac{5}{2}$$
C
$$\frac{6}{5}$$
D
$$\frac{7}{6}$$
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