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Which of the following waves can be polarised (i) Heat waves (ii) Sound waves? Give reason to support your

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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How does the angular separation between fringes in single slit diffraction experiment change when the distance of separation between the slit and screen is

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How does the fringe width in ' Young's double slit experiment, change when the distance of separation between the slits and screen is

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State Huygens' principle of diffraction of

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If the angle between the axis of polariser and the analyser is 45°; write the ratio of the intensities of original light and the transmitted light after passing through the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Unpolarised light is incident on a plane surface of glass of refractive index p at an angle i. If the reflected light gets totally polarised, write the relation between the angle i and refractive

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Unpolarised light of intensity `I` is passed through a polaroid. What is the intensity of the light transmitted by the

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When coherent waves (a) same phase(b) same frequency(c) same phase difference(d) same path

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Draw a new wavefornt from the given incident

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Lighth is coming from medium 1. Some part of light is being refracted and some part is reflectedWhat is the incident wavefront_______refracted

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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What is the path difference for the two waves as given in the fig.`theta' is 'pi/20

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In the above question what is the intensity of light at P if light from `S_1` and `S_2` is same i.e. (I) units. Consider these sources are

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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In Youngs double slit experiment the fring spacing can be increased by these methods. Write true or false. Correct if any statement is false.a) By decreasing distance.b) By increasing the wavelenghtc) By increasing the refractive index of the medium in which experiment is taking place (e.g. this experiment is originally done in air. This experiment can also be performed in water of higher refractive index)d) By increasing the distance between the two coherent sources.c) This experiment is not valid for other waves like Electromagnetic waves, Sound Waves

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The fringe spacing in Young's double slit experiment is 0.5mm. Wavelength of light is 500nm. What could be the screen distance for this experiment. The disatance between the two sources

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If the above experiment is repeated of interference, by replacing two sources to a single slits of width 1mm. What would be the thickness of central

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The work function of caesium is 2.14 eV. Find the threshold frequency for

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Answer the following questions: Quarks inside protons and neutrons are thought to carry fractional charges [(+2/3)e ; (–1/3)e]. Why do they not show up in Millikan’s oil-drop

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Answer the following questions: What is so special about the combination e/m? Why do we not simply talk of e and m

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Answer the following questions: Why should gases be insulators at ordinary pressures and start conducting at very low

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Answer the following questions: Every metal has a definite work function. Why do all photoelectrons not come out with the same energy if incident radiation is monochromatic? Why is there an energy distribution of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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