JEE Main 2021 (Online) 16th March Evening Shift | Ray & Wave Optics Question 112 | Physics

JEE Main 2021 (Online) 16th March Evening Shift

Numerical

-1

A deviation of 2$$^\circ$$ is produced in the yellow ray when prism of crown and flint glass are achromatically combined. Taking dispersive powers of crown and flint glass as 0.02 and 0.03 respectively and refractive index for yellow light for these glasses are 1.5 and 1.6 respectively. The refracting angles for crown glass prism will be ____________$$^\circ$$ (in degree). (Round off to the Nearest Integer)

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JEE Main 2021 (Online) 16th March Morning Shift

Numerical

-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 ____________.

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JEE Main 2021 (Online) 26th February Evening Shift

Numerical

-1

A point source of light S, placed at a distance 60cm in front of the centre of a plane mirror of width 50 cm, hangs vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 1.2 m from it (see in the figure). The distance between the extreme points where he can see the image of the light source in the mirror is __________ cm.

JEE Main 2021 (Online) 26th February Evening Shift Physics - Ray & Wave Optics Question 116 English

JEE Main 2021 (Online) 26th February Evening Shift Physics - Ray & Wave Optics Question 116 English

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JEE Main 2021 (Online) 25th February Morning Shift

Numerical

-1

The same size images are formed by a convex lens when the object is placed at 20 cm or at 10 cm from the lens. The focal length of convex lens is __________ cm.

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