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Syllabus

how does the angle of minimum deviation of glass prism vary if the incident violet light is replaced by red light???

what is the difference between polariser and analyser?

state the conditions for sustained interference of light.

Draw reflected wavefront when a plane wavefront is incident on concave mirror, convex mirror, concave lens and convex lens.

What is Fresnel distance? derive an expression for it.

explain the Huygens principle with example?

why are coherent sources required to produce the interference of light.

in young's double slit experiment ,the slits are separated by 0.24mm.The screen is 1.2m away from the slits .the fringe width is 0.3 cm.find the wavelength of light used.

ans is 6000 amstrong

the intensity at the central maxima (o) in a young's double slit experiment is I

_{o}. If the distance OP equals 1/3rd of the fringe width of the pattern , show that the intensity at a point would be I_{0}/4.in the experiment on diffraction due to single slit show that

I) The intensity of diffraction fringes decreases as the order n increases

ii) angular width of the central maximum is twice that of the firdt order secondary maximum

what is the relation between polarising angle and critical angle

Q.26. The mass string system shown in the figure is in equilibrium. If the coefficient of friction between A and the table is 0.3, the frictional force on A is :-

(1) 9.8 N

(2) 2.04 N

(3) 1.96 N

(4) 0.59 N

In a Young's double slit experiment the intensity at the cetral maxima is I_{0}. Find the intensity at a distanceB(beta)/4 from the central maxima where B(beta) is the fringe width.also write the formula for limit of resolution for a telescope and a microscope.

what is the difference between scattering and diffraction?

takes place. Derive an expression for the width of the central maximum

due to diffraction of light at a single slit. Also draw the intensity pattern

with angular position.

An experimental set up similar to young's double slit experiment to observe the interference of light.

Here SS

_{2 }- SS_{1}= lambda/4write down the conditions for

(1)constructive interfernece

(2) destructive interference in terms of path difference S

_{2}p - S_{1}P = deltaDoes the central fringe observed in the above set up lie above or below O . Give reason

explian young's modulus by searle's method..

which of the following waves can be polarised.(i) heat waves (ii) sound wave?and why.

A slit of width

ais illuminated by a light of wavelength 700nm. what will be the value of slit widthawhena) first minimum faces at an angle of diffraction 30 degree.

b) first maximum faces at an angle of diffraction 30 degree. pls.. explain

(1)screen is moved away from the plane of the slits.

(2)the monochromatic source is replaced by another monochromatic source of shorter wavelength

(3) the monochromatic source is replaced by another monochromatic source of longer wavelength

(4)slit width is increased.

(5)monochromatic light is replaced by white light.

31. Light of wavelength 600 nm falls normally on a slit of width 1.2 $\text{\mu}$m producing Fraunhoffer diffraction pattern on a screen.

Calculate the angular position of the first minimum and the angular width of the central maximum.

Two polariods P1 and P2 are placed with their pass axes perpendicular to each other. Unpolarised light of intensity I

_{o }is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its pass axis makes an angle 45^{0 }with that of P1. determine the intensity of light transmitted though P1, P2 and P3.$\left(1\right)\frac{\mathrm{\pi}}{8}\left(2\right)\frac{\mathrm{\pi}}{4}\left(3\right)\frac{\mathrm{\pi}}{6}\left(4\right)\frac{\mathrm{\pi}}{12}$

When

monochromatic lightis incident on a surface separating two media, thereflected & refractedlight both hav thesame frequencyas theincident frequency.Cud u explain in detail'why'?Two identical glass plates are kept close and parallel to each other at one of the slit in YDSE arrangement. Each glass plate reflects 20% of the light incident on it and rest is transmitted. If slits are illuminated with light of same intensity then ratio of the minimum and maximum intensities in the interference formed is

(A) 1/81 (B) 1/9 (C) 1/4 (D) 1/16

Draw a graph showing the variation of intensity of polarised light transmitted by an analyser.

Plz...give the answers fast sir!!!

16. The light waves having displacements ${\mathrm{y}}_{1}=10\mathrm{sin}\left(\mathrm{\omega t}-\mathrm{kx}\right)\mathrm{and}{\mathrm{y}}_{2}=5\mathrm{sin}\left(\mathrm{\omega t}-\mathrm{kx}+\mathrm{\varphi}\right)$ interfere. The ratio of

maxirnum to the minimum intensity of light in the interference pattem is

(1) 9:1 (2) 3:1

(3) 2:1 (4) 81:1

A light bulb and an open coil inductor are connected in series to an A.C source through a key .The Key is closed and after sometime iron rod is inserted into the interior of inducror . The glow of light bulb...(a)Increase (b) Decreases (c) Uncharged

WHEN rod is inserted what will be your answer if ac is replaced by dc .How the glow of bulb of change if the no of turns of coil is reduced.

(a)In a single slit diffraction experiment, the width of the slit is made double the original width. How does this affect the size and intensity of the central diffraction band?(b)In what way is diffraction from each slit related to the interference pattern in a double-slit experiment?(c)When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is seen at the centre of the shadow of the obstacle. Explain why?(d)Two students are separated by a 7 m partition wall in a room 10 m high. If both light and sound waves can bend around obstacles, how is it that the students are unable to see each other even though they can converse easily.(e)Ray optics is based on the assumption that light travels in a straight line. Diffraction effects (observed when light propagates through small apertures/slits or around small obstacles) disprove this assumption. Yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. What is the justification?.(1) 2 mm (2) 4 mm (3) 6 mm (4) 8 mm

What Are The Assumption Of

?Huygen's PrincipleA beam of light consisting of two wavelengths, 800nm and 600nm is used to obtain the interference fringes in Young's double slit experiment on a screen placed 1.4m away. If the two slits are separated by 0.28mm, calculate the least distance from the central bright maximum where the bright fringes of the two wavelength coincide??

Q35. Due to effect of interference, floating oil layer water is visible coloured, due to observation of the event the thickness of oil layer should be :

(1) 10 nm (2) 0.1 $\mathrm{\mu}$m (3) 1 mm (4) 10 mm

name the exp which shows the wave nature of an electron? which phenomenon was observed in this exp using electron beam.?

Q. In YDSE, the phase difference between two coherent sources is $\frac{\mathrm{\pi}}{3}$ and constant. What is the intensity at a point which is at equal distance from the sources ?(${l}_{o}$ is maximum intensity)

what is meaning of geometrical shadow???

What is the shape of the wavefront in each of the following cases:

(a)Light diverging from a point source.(b)Light emerging out of a convex lens when a point source is placed at its focus.(c)The portion of the wavefront of light from a distant star intercepted by the Earth.Two radio frequency point sources separated by 2.0m are radiating in phase with wavelength 0.5m.A detector moves in a circular path around the two sources in a plane containing them.find how many maxima it detects?

_{1}and S_{2}have phase difference of (i) $\frac{\pi}{3}$ and (ii) $\frac{\pi}{2}$ respectively.Show that the angular width of the first diffraction fringe is half that of the central fringe.

(1) 10 mm (2) 10

^{–3}mm (3) 10 pm (4) 1 cmDiffraction defines the limit of ray optics.give explanations? - 3 marks

plz answer this question :- In a double slit diffraction arrangement , what should be the width of each slit to obtain 10 maxima of double slit pattern within the central maximum of the single slit pattern ? [ two slits are made 1mm apart ]

Compare and constrast the pattern which is seen with two coherently illuminated narrow slits in Youngs experiment with that seen for a coherently illuminated single slit producing defraction.

PLZ DERIVE THE EXPRESSION OF ANGULAR FRINGE WIDTH............

two independent light sources cannot act as coherent sources.why?

Frequency of wave emitted by source is 300 Hz. XX' is line along common diameter of wave fronts passing through 'A'. Distance between two consecutive wave fronts along line XX' is 0.9 m and 1.3 m in the right and left of point A respectively.

At some instant source is at point A. Detector is placed at point 'Q' AQ makes an angle 60° with line XX' If frequency of wave received by detector is

fHz, then $\frac{f}{110}$ (in Hz) is equal toTwo polaroids are placed with their optiic axis perpendicular to each other. One of them is rotated through 45 degrees then what is the intensity of light emerging from the second polaroid if I

_{o}is the intensity of the unpolarised light?State Huygens Principle ??? Derive laws of reflection and refraction using it ...

Assume that light of wavelength 6000Å is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of 100 inch?

what is central maximum?

why is sonometer box hollow from inside?

What is the expression for the angular width of the central maximum in single slit diffraction? How to derive it?

sketch the wave font emerging from a linear source of light like a slit?

how does the fringe width of interference fringes change,when thw whole apparatus of Young's experiment is kept in liquid of refractive index 1.33??

wht is locus??wht a wave front actually is?

what is pass axis of af a polaroid ?

what does it mean by path difference and phase difference plz explain me in detail

in single slit experiment explain clearly why the secondary maxima become weaker with increasing order (n) of secondary

maxima?

What is the effect on the interference pattern observed in a young's double slit experiment in the following cases when:(i) screen is moved away from the plane of the slits.(ii) seperation between the slits is increased.(iii) width of the slits are doubled.Give reasons for your ans....the intensity distribution curve

In young's double slit experiment the two slits 0.15mm apart are illuminated by monochromatic light of wavelength 450nm. The screen is 1m away from the slits. Find the distance of the second

a) bright fringe

b) dark fringe from central maximum

ExplAIN THE BAnD THeORy OF SOLIDS IN EaSY LANGUagE...