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QJEE MAIN 2019
In a double slit experiment, when a thin film of thickness $t$ having refractive index $\mu$ is introduced in front of one of the slits,...
JEE MainPhysicsMedium
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QJEE MAIN 2019
The value of numerical aperture of the objective lens of a microscope is 1.25. If light of wavelength 5000 Å is used, the minimum separation...
JEE MainPhysicsMedium
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QJEE MAIN 2019
Liquid ‘M’ and liquid ‘N’ form an ideal solution. The vapour pressures of pure liquids ‘M’ and ‘N’ are 450 and 700 mmHg, respectively, at...
JEE MainChemistryMedium
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QJEE MAIN 2020
A beam of electrons of energy $E$ scatters from a target having atomic spacing of $1 \AA$. The first maximum intensity occurs at $\theta=60^{\circ}$. Then...
JEE MainPhysicsHard
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QJEE MAIN 2029
In a Young's double slit experiment, the slits are placed 0.320 mm apart. Light of wavelength $\lambda=500 \mathrm{~nm}$ is incident on the slits. I he...
JEE MainPhysicsMedium
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QJEE MAIN 2019
A system of three polarizers $P_1, P_2, P_3$ is set up such that the pass axis of $P 3$ is crossed with respect to that...
JEE MainPhysicsHard
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QJEE MAIN 2020
In the figure below, P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m . The separation between P and...
JEE MainPhysicsEasy
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QJEE MAIN 2020
A Young's double-slit experiment is performed using monochromatic light of wavelength $\lambda$. The intensity of light at a point on the screen, where the path...
JEE MainPhysicsMedium
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QJEE MAIN 2020
The aperture diameter of a telescope is 5 m . The separation between the moon and the earth is $4 \times 10^5 \mathrm{~km}$. With light...
JEE MainPhysicsHard
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QJEE MAIN 2019
In a Young's double slit experiment, the path difference, at a certain point on the screen, between two interfering waves is $\frac{1}{8}$ th of wavelength....
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