1

JEE Main 2021 (Online) 16th March Morning Shift

Numerical

+4

-1

A fringe width of 6 mm was produced for two slits separated by 1 mm apart. The screen is placed 10 m away. The wavelength of light used is 'x' nm. The value of 'x' to the nearest integer is ____________.

Your input ____

2

JEE Main 2021 (Online) 24th February Morning Shift

Numerical

+4

-1

An unpolarised light beam is incident on the polarizer of a polarization experiment and the intensity of light beam emerging from the analyzer is measured as 100 Lumens. Now, if the analyzer is rotated around the horizontal axis (direction of light) by 30$$^\circ$$ in clockwise direction, the intensity of emerging light will be _________ Lumens.

Your input ____

3

JEE Main 2020 (Online) 6th September Evening Slot

Numerical

+4

-0

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 difference is $$\lambda $$, is K units. The intensity
of light at a point where the path difference is $${\lambda \over 6}$$ is given by $${{nK} \over {12}}$$, where n is an integer. The value
of n is __________.

Your input ____

4

JEE Main 2020 (Online) 4th September Evening Slot

Numerical

+4

-0

Orange light of wavelength 6000 $$ \times $$ 10

slit of width 0.6 $$ \times $$ 10

^{–10}m illuminates a singleslit of width 0.6 $$ \times $$ 10

^{–4}m. The maximum possible number of diffraction minima produced on both sides of the central maximum is ___________.Your input ____

Questions Asked from Wave Optics (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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