1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-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

A
$$4.9 \times 10^{-4} \mathrm{~m}$$
B
$$5.8 \times 10^{-4} \mathrm{~m}$$
C
$$6.3 \times 10^{-4} \mathrm{~m}$$
D
$$8.6 \times 10^{-4} \mathrm{~m}$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

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

A
becomes zero.
B
does not change.
C
increases.
D
decreases.
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In biprism experiment, if $$5^{\text {th }}$$ bright band with wavelength $$\lambda_1^{\prime}$$ coincides with $$6^{\text {th }}$$ dark band with wavelength $$\lambda_2{ }^{\prime}$$ then the ratio $$\left(\frac{\lambda_2}{\lambda_1}\right)$$ is

A
$$\frac{9}{7}$$
B
$$\frac{7}{9}$$
C
$$\frac{10}{11}$$
D
$$\frac{11}{10}$$
4
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In Young's double slit experiment, the two slits are 'd' distance apart. Interference pattern is observed on a screen at a distance 'D' from the slits. A dark fringe is observed on a screen directly opposite to one of the slits. The wavelength of light is

A
$$\frac{\mathrm{D}^2}{2 \mathrm{~d}}$$
B
$$\frac{\mathrm{d}^2}{2 \mathrm{D}}$$
C
$$\frac{\mathrm{D}^2}{\mathrm{~d}}$$
D
$$\frac{d^2}{D}$$
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