COMEDK 2025 Afternoon Shift | Wave Optics Question 12 | Physics

A monochromatic light of wave length $6000^{\circ} \mathrm{A}$ is passed through two media A and B of thickness 10 cm and 16 cm respectively. The number of waves in $A$ is $\frac{1}{2}$ that of $B$. If the refractive index of $A$ is $\frac{4}{3}$, find the refractive index of $B$.

$\mu_B=\frac{4}{3}$

$\mu_B=\frac{3}{5}$

$\mu_B=\frac{3}{2}$

$\mu_B=\frac{5}{3}$

COMEDK 2025 Morning Shift

MCQ (Single Correct Answer)

-0

In a single slit Fraunhofer diffraction pattern obtained at normal incidence, at the angular position of the second diffraction minimum the phase difference (in radian) between the waves from the opposite edges of the slit is

$\pi$

zero

$2\pi$

$\frac{\pi}{2}$

COMEDK 2025 Morning Shift

MCQ (Single Correct Answer)

-0

Two coherent waves of intensities $I_1$ and $I_2$ pass through a region at the same time in the same direction. The sum of maximum to minimum intensities is

$\left(I_1+I_2\right)$

$2\left(I_1+I_2\right)$

$2\left(\sqrt{I_1}+\sqrt{I_2}\right)^2$

$\left(I_1+I_2\right)^2$

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

In Young's double slit experiment light of wavelength $$500 \mathrm{~nm}$$ is used to form interference pattern. A uniform glass plate of refractive index 1.5 and thickness $$0.1 \mathrm{~mm}$$ is introduced in the path of one of the interfering beams. The number of fringes that will shift due to this is

100

400

300

200

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