Physics question and answers for October 25, 2023
- Q A beam of bright red light of wavelength 654 nm passes through a diffraction grating Enclosing the space beyond the grating is a large semicylindrical screen centered on the grating...
- Q 4 In Young s double slit experiment the wavelength of red light is 7800 and that of blue light is 5200 A The value of n for which nth bright...
- Q 3 Two polaroid sheets are placed one over the other with their axes inclined to each other at an angle If only 12 5 of the intensity of the light...
- Q 9 Two parallel rays are travelling in a medium of refractive index 4 3 One of the rays passes through a parallel glass slab of thickness t and refractive index...
- Q 7 In a double slit experiment the separation between the slits is d 0 25 cm and the distance of the screen D 100 cm from the slits If the...
- Q 10 Light waves travel in vacuum along the y axis Which of the following may represent the wavefront a x constant c z constant b y constant d x y...
- Q 6 In a YDSE with two identical slits when the upper slit is covered with a thin perfectly transparent sheet of mica the intensity at the centre of screen reduces...
- Q Unpolarised light of intensity 32Wm passes through three polarisers such that the transmission axis of the last polariser is crossed with first If the intensity of the emerging light is...
- Q th 4 In Young s double slit experiment the wavelength of red light is 7800 and that of blue light is 5200 The value of n for which n bright...
- Q 10 8 A thin film of thickness t and index of refraction 1 33 coats a glass with index of refraction 1 50 What is the least thickness t that...
- Q D A horizontal beam of vertically polarized light of intensity 43 W m is sent through two polarizing sheets The polarizing direction of the first is 60 to the vertical...
- Q 2 A linearly polarized electromagnetic wave given as E Eicos kz cot is incident normally on a perfectly reflecting infinite wall at z a Assuming that the material of the...
- Q shown in figure a S1 S2 D 1m If S S 3mm OP 11 mm then a If a 0 36 degree then destructive interfaces at point P b If...
- Q 15 A prism having refractive index 1 414 and refracting angle 30 has one of the refracting surfaces silvered A beam of light incident on the other refracting surface will...
- Q An object moves with velocity V i towards the inclined plane mirror as shown in figure The velocity of the image is YO Iv iv 30 Answer Your Attempt x...
- Q 2 10 In the figure shown S 0 S 0 30 0 4 Intensity at O due to any one of the slits is Io What is the intensity due...
- Q In a young s double slit experiment fringe width equal to 1 mm is observed Then the distance of the nearest bright fringe from the central fringe will be Question...
- Q separate set ups of the young s double slit experiment fringes of equal width are observed when light of wavelengths in the ratio 1 2 are used If the ratio...
- Q For a wavelength 6000 incident normally 7 fringes appear in thin film of air between two points What is difference of thickness between these points A 3 2 1061 m...
- Q in the two cases is 2 1 the of the distances between the plane of the slits and the screen in the two set ups is a 4 1 b...
- Q 15 If an interference pattern has maximum and minimum intensities in 36 1 ratio then what will be the ratio of amplitudes a 5 7 16 Monochromatic b 7 4...
- Q In young s double slit experiment the intensity of light coming from the first slit is double the intensity from the second slit The ratio of the maximum intensity to...
- Q 25 Young s double slit experiment is carried out by using green red and blue light one colour at a time The fringe width recorded are B B Brespectively Then...
- Q 3 Light from n incoherent sources of intensity I 21 31 nI are super imposed in a region Resultant intensity at a point in the region of superposition will be...
- Q d Same at all points 4 The young s double slit experiment is performed with light of wavelength 6000 where in 16 fringes occupy a certain region on the screen...
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