which of the following waves can be polarised.(i) heat waves (ii) sound wave?and why.
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.
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'?
Draw a graph showing the variation of intensity of polarised light transmitted by an analyser.
Plz...give the answers fast sir!!!
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?.
name the exp which shows the wave nature of an electron? which phenomenon was observed in this exp using electron beam.?
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??
what is meaning of geometrical shadow???
Diffraction defines the limit of ray optics.give explanations? - 3 marks
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.
which of the following waves can be polarised.(i) heat waves (ii) sound wave?and why.
(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.
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.
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'?
Draw a graph showing the variation of intensity of polarised light transmitted by an analyser.
Plz...give the answers fast sir!!!
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?.
name the exp which shows the wave nature of an electron? which phenomenon was observed in this exp using electron beam.?
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??
what is meaning of geometrical shadow???
Diffraction defines the limit of ray optics.give explanations? - 3 marks
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.