Physics question and answers for October 27, 2023
- Q 1 Two slits are 1 mm apart and the screen is placed one metre away Source produces blue and yellow light which is placed symmetrically with respect to slits to...
- Q 28 In single slit diffraction the width of slit and wavelength used is A Find angu separation between 3 dark fringes above below central maxima The distance of scr from...
- Q A ray of light is refracted through a transparent sphere of refractive index n 2 in such a way that it passes through the extremities of two radii which make...
- Q Young double slit experiment is performed in air At certain position 3rd minima is found If same arrangement is placed in a liquid then 3rd maxima is found at that...
- Q In Young s double slit experiment with light of wavelength 600 nm intensity of central fringe is I Now one of the slit is covered by glass plate of refractive...
- Q The superposition takes place between two waves of frequency f and amplitude a The maximum intensity Imax Constant x Then x will b 0 2a 2a Marks 4a
- Q 1 2 3 refraction In Column I the parallel rays are incident o some optical device and in Column II the shap of emergent wavefronts are shown Seled incorrect match...
- Q In Young s double slit experiment d D 10 4 d distance between slits D distance of screen from the slits At a point P on the screen the resulting...
- Q 14 In a young double slit apparatus the screen is rotated by 60 about an axis parallel to the slits The slits separation is 3 mm slit um to screen...
- Q A hemispherical surface of radius R and refractive index 1 5 is polished as shown At what distance x from point P a point object Obe placed so that its...
- Q Two coherent sources S and S are placed at small separation One of the two sources is moved in a line perpendicular to the line joining the initial position of...
- Q ILLUSTRation 3 9 Two sources are placed on x axis at a separation d 32 An observer starts moving from A on a circular track of radius R R d...
- Q In an elliptically polarised light the amplitude of the vibrations a remains constant b changes in direction only c changes in magnitude only d both b and c 199
- Q A man of height 3 2 m wants to see himself in plane mirror from top to bottom The plane 3 mirror is inclined with vertical wall at angle 53...
- Q 21 The refractive index of a thin film is 1 42 If it is illuminated by sodium light 2 5 9x107 meter find the minimum thickness of the film to...
- Q A particle of mass 1 ug is dropped from height 20m Its de Broglic wavelength is 1 3 3 x 10 kg m s 2 3 3 x 10 kg...
- Q 3 In Young s experiment using monochromatic light the fringe pattern shifts by a certain distance on the screen when a mica sheet of refractive index 1 6 and thickness...
- Q 20 A light wave is incident normally over a slit of width 24 x 10 5 cm The angular position of second dark fringe from the central maxima is 30...
- Q Consider Fraunhofer diffraction pattern obtained with a single slit illuminated at normal incidence At the angular position of the first diffraction minimum the phase difference in radians between the wavelets...
- Q Young s double slit experiment is conducted in a liquid of refractive index u as shown in figure A thin transparent slab of refractive index is placed in front of...
- Q A photon of frequency v strikes an electron of mass m initially at rest After scattering at an angle the photon loses half of its energy If the electron recoils...
- Q A single slit of width a is illuminated with a monochromatic light of wavelength 2 The angular width of the central maximum is found to be 0 If the slit...
- Q In a Davisson Germer experiment Helium atoms were used in place of electrons What should be the energy of Helium so that a strong peak of scattered He appears at...
- Q 2 A person AB of height 170 cm is standing in front of a vertical plane mirror His eyes are at height 164 cm from ground At what distance from...
- Q Pure blue and red light beams are passing through a glass prism Which of the following is tru A Blue light has higher dispersive power B Blue light has higher...
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