Q. In YDSE setup when white light is used then which of the following statements are correct for the interference pattern obtained.

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A

The fringe next to the central maxima will be Reddish white

B

Central maxima will be white in colour

C

The fringe next to the central maxima will be Bluish white

D

There will be no fringe which is perfectly dark

Solution:

As analyzed in article 6.4.5

Questions from Wave Optics

1. Which of the following phenomena support the wave theory of light ?
(a) scattering
(b) interference
(c) diffraction
(d) velocity of light in a denser medium is less than the velocity of light in the rarer medium

KCET 2013

2. In Young's double slit experiment, how many maxima can be obtained on a screen (including central maxima), if $\text{d} = \frac{5 \lambda }{2}$ (where $\lambda $ is the wavelength of light)?

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3. Light of wavelength $600 \, nm$ is incident normally on a slit of width $0.2 \, mm$ . The angular width of central maxima in the diffraction pattern is (measured from minimum to minimum)

NTA Abhyas 2020

4. Using monochromatic light of wavelength $\lambda$, an experimentalist sets up the Young's double slit experiment in three ways as shown.
If she observes that y = $\beta'$ the wavelength of light used is :

JEE Main 2014

5. At two points P and Q on a screen in Young's double slit experiment, waves from slits $S_1$ and $S_2$ have a path difference of 0 and $\frac{\lambda}{4}$ respectively. The ratio of intensities at P and Q will be :

AIEEE 2011

Physics Most Viewed Questions

1. If $E$ and $G$ respectively denote energy and gravitational constant, then $\frac{ E }{ G }$ has the dimensions of:

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2. The de Broglie wavelength of an electron moving with kinetic energy of $144 \,eV$ is nearly

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3. A car starts from rest and accelerates at $5\, m / s ^{2}$ At $t=4\, s$, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at $t =6\, s$ ? (Take $\left. g =10\, m / s ^{2}\right)$

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4. A wheel with $20$ metallic spokes each $1\, m$ long is rotated with a speed of $120\, rpm$ in a plane perpendicular to a magnetic field of $0.4\, G$. The induced emf between the axle and rim of the wheel will be, $(1 G = 10^{-4}\, T)$

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5. A barometer is constructed using a liquid (density $= 760 \,kg/m^{3})$ What would be the height of the liquid column, when a mercury barometer reads $76\, cm$ ?
(density of mercury $= 13600 kg/m^{3})$

NEET 2020 Mechanical Properties of Fluids