Physics question and answers for October 24, 2023
- Q 1 Violet light is falling on a photosensitive material causing ejection of photoelectrons with maximum kinetic energy of 1 eV Red light falling on metal will cause emission of photoelectrons...
- Q The maximum intensity of fringes in Young s experiment is 1 If one of the slits is closed then intensity at that place becomes Then relation between I and is
- Q In physics laboratory a student is trying to calculate the focal length of a convex lens He measures the distance between screen and a light source lined up on the...
- Q 50 In Young s double slit interference experiment if the n bright fringe for light of wavelength 2 n 0 1 2 coincides with the mth dark fringe for light...
- Q A zero 2 cm C 4 cm D 1 cm A person s eye is at a height of 1 5 m He stands infront of a 0 3m long...
- Q 7 Two prisms of prism angles A and A are placed in contact with each other with second prism upside down The refractive indices for violet and red colours for...
- Q Assuming the Sun to be a spherical body of radius R at a temperature of TK evaluate the total radiant powerd incident of Earth at a distance r from the...
- Q 25 White coherent light 400 nm 700 nm is sent through the slits of a Young s double slit experiment figure 17 E3 The separation between the slits is 0...
- Q 20 Ratio of width of principal maxima to the second order maxima in Fraunhofer single slit diffrac 1 4 3 2 2 3 4 1
- Q In a biprism experiment by using light of wavelength 5000 A 5 mm wide fringes are obtained on a screen 1 0 m away from the coherent sources The separation...
- Q c 0 1 cm In Young s double slit experiment the distance between sources is 1 mm and distance between the screen and source is 1 m If the fringe...
- Q A plane wavefront wavelength 2 is falling on YDSE apparatus as shown in the figure The lower half of it is filled with water refractive index 1 5 How many...
- Q In Young s experiment the distance between the slits is reduced to half and the distance between the slit and screen is doubled then the fringe width IIT 1981 MP...
- Q Two point monochromatic and coherent sources of light of wavelength 2 are placed on the dotted line in front of an infinite screen The sources emit waves in phase with...
- Q For Problems 10 12 A point source Semits light of wavelength 600 nm It is placed at a very small distance from a flat reflecting mirror AB Interface fringes as...
- Q 1 101 1 D d S Ko A thin transparent plate is placed on the path of one interfering beam as shown What is the shift in central bright fringe...
- Q A lens of diameter 5 0 cm and focal length f 25 0 cm was cut along the diameter into two identical halves In the process the layer of the...
- Q 16 In the given circuit current flow through resistance of 5 2 is 20 VT 1 15 A 3 5 A 22 59 5 V 2 10 A 4 Zero...
- Q You find a pair of eyeglasses and discover that each lens is able to focus the sun s rays to spot What type of vision problem does the owner of...
- Q Light incident on a surface separating two media is partly reflected and partly refracted as shown in the figure Then 1212 1 sini 3 sini Sausa lla SPORD 90 H...
- Q 1 A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in su way that the end closer to the...
- Q Select the correct statement 1 Interference is necessary for diffraction in YDSE 2 Diffraction is necessary for interference in YDSE 3 Young s double slit experiment is diffraction experiment 4...
- Q source of light Cylindrica Why are multiple colours observed over a thin film of oil floating on water Explain with the help of a diagram
- Q 12 Two tuning forks vibrating at 340 Hz each move relative to a stationary observer one away from the observer and the other towards the observer with the same speed...
- Q Illustration 28 A lens having focal length 30 cm is cut along a plane parallel to the principal axis of the lens at a distance 5 mm above optical centre...
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