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what is the difference between polariser and analyser?
how does the angle of minimum deviation of glass prism vary if the incident violet light is replaced by red light???
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.
explain the Huygens principle with example?
What is Fresnel distance? derive an expression for it.
why are coherent sources required to produce the interference of light.
the intensity at the central maxima (o) in a young's double slit experiment is Io. If the distance OP equals 1/3rd of the fringe width of the pattern , show that the intensity at a point would be I0/4.in the experiment on diffraction due to single slit show that
I) The intensity of diffraction fringes decreases as the order n increasesii) angular width of the central maximum is twice that of the firdt order secondary maximum
(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?.
what is the relation between polarising angle and critical angle
what is the difference between scattering and diffraction?
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.
explian young's modulus by searle's method..
which of the following waves can be polarised.(i) heat waves (ii) sound wave?and why.
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?
An experimental set up similar to young's double slit experiment to observe the interference of light.
Here SS2 - SS1 = lambda/4
write down the conditions for
(2) destructive interference in terms of path difference S2p - S1P = delta
Does the central fringe observed in the above set up lie above or below O . Give reason
Two polariods P1 and P2 are placed with their pass axes perpendicular to each other. Unpolarised light of intensity Io is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its pass axis makes an angle 450 with that of P1. determine the intensity of light transmitted though P1, P2 and P3.
Draw a graph showing the variation of intensity of polarised light transmitted by an analyser.
Plz...give the answers fast sir!!!
In a Young's double slit experiment the intensity at the cetral maxima is I0. Find the intensity at a distance
B(beta)/4 from the central maxima where B(beta) is the fringe width.
A 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??
name the exp which shows the wave nature of an electron? which phenomenon was observed in this exp using electron beam.?
In young's double slit exp, the fringe width is found to be 0.4mm. If the whole apparatus is immersed in water of refractive index 4/3 without disturbing the geometrical arrangement, what will be the new fringe width ??
PLZ DERIVE THE EXPRESSION OF ANGULAR FRINGE WIDTH............
When monochromatic light is incident on a surface separating two media, the reflected & refracted light both hav the same frequency as the incident frequency.Cud u explain in detail 'why'?
What is the shape of
the wavefront in each of the following cases:
diverging from a point source.
emerging out of a convex lens when a point source is placed at its
(c) The portion of the wavefront of light from a distant star
intercepted by the Earth.
Show that the angular width of the first diffraction fringe is half that of the central fringe.
What Are The Assumption Of Huygen's Principle?
Diffraction defines the limit of ray optics.give explanations? - 3 marks
what is meaning of geometrical shadow???
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
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?
two independent light sources cannot act as coherent sources.why?
State Huygens Principle ??? Derive laws of reflection and refraction using it ...
why is sonometer box hollow from inside?
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??
Two 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 Io is the intensity of the unpolarised light?
what does it mean by path difference and phase difference plz explain me in detail
what is pass axis of af a polaroid ?
wht is locus??wht a wave front actually is?
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 ]
what is central maximum?
ExplAIN THE BAnD THeORy OF SOLIDS IN EaSY LANGUagE...
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
What is interference of light? Write two essential conditions for sustained interference pattern to be produced on the screen.Draw a graph showing the variation of intensity versus the position on the screen in Young’s experiment when (a) both the slits are opened and (b) one of the slits is closed.What is the effect on the interference pattern in Young’s double slit experiment when:(i) Screen is moved closer to the plane of slits?(ii) Separation between two slits is increased. Explain your answer in each case.
What is the effect on the interference pattern in Young’s double slit experiment when:
(i) Screen is moved closer to the plane of slits?(ii) Separation between two slits is increased. Explain your answer in each case.
Interference can be observed with two dependent tuning forks but it cannot be observed with two independent bulbs. Explain.
What is the Brewster
angle for air to glass transition? (Refractive index of glass = 1.5.)
what is the difference between wave surface and wave front?
what is path difference and phase difference can you explain it in detail
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