KCET 2018 | Wave Optics Question 21 | Physics

In Young's double slit experiment, slits are separated by 2 mm and the screen is placed at a distance of 1.2 m from the slits. Light consisting of two wavelengths $$6500\mathop A\limits^o $$ and $$5200\mathop A\limits^o $$ are used to obtain interference fringes. Then, the separation between the fourth bright fringes of two different patterns produced by the two wavelengths is

0.312 mm

0.123 mm

0.213 mm

0.412 mm

KCET 2017

MCQ (Single Correct Answer)

-0

According to Huygens' principle, during refraction of light from air to a denser medium

Wavelength decreases but speed increases

Wavelength increases but speed decreases

Wavelength and speed increases

Wavelength and speed decreases

KCET 2017

MCQ (Single Correct Answer)

-0

In a system of two crossed polarisers, it is found that the intensity of light from the second polariser is half from that of first polariser. The angle between their pass axes is

$60^{\circ}$

$30^{\circ}$

$0^{\circ}$

$45^{\circ}$

KCET 2017

MCQ (Single Correct Answer)

-0

During scattering of light, the amount of scattering in inversely proportional to................ of wavelength of light.

square

fourth power

half

cube

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