Physics question and answers for October 26, 2023
- Q 21 Find the maximum intensity in case of interference of infinite identical coherent sources having intensities Io 10 10 10 10 upto infinite 4 16 64 256 a lo c...
- Q 12 Young s double slit experiment is made in a liquid The 10th bright fringe in liquid lies where 6th dark fringe lies in vacuum The refractive index of the...
- Q The intensity of the central fringe obtained in the interference pattern due to two indentical slit sources is I When one of the slits is closed then the intensity at...
- Q E Initially interference is observed by YDSE with entire experimental set up inside a chamber filled with air Now chamber is evacuated With same source of light used a careful...
- Q A screen is placed 2 m from a single slit of width 0 2 mm which is illuminated with 580 nm light a Find the position of the third order...
- Q The figure shows Fraunhoffer s diffraction due to a single slit If first minimum is obtained in the direction shown then the path difference between rays 1 and 3 is...
- Q 39 Figure given below shows four progressive waves 42 A B C and D with their phase expressed with respect to the wave A It can be calculated from the...
- Q In the figure the intensity of waves arriving at D from two coherent sources S and S is l The wavelength of the wave is Resultant intensity at D will...
- Q waves in air 36 For the wave shown in figure given below th frequency and wavelength if its speed 320 m sec are ma A 1 8 cm 400 Hz...
- Q In YDSE set up one of the slit S of a double slit system is wider than the other so that the amplitude of light reaching the central part of...
- Q Visible light of wavelength 6000 x 10 8 cm falls normally on a single slit and produces a diffraction pattern It is found that the second diffraction minimum is at...
- Q The light beams of intensities in the ratio of 9 1 are allowed to interfere What will be the ratio of intensities of maxima and minima A B skipped 3...
- Q Questions 15 to 17 are based on the following write up If Snell s law is found valid for two mediums whose refractive indices have opposite signs the incident and...
- Q 11 While travelling by a train or by a bus if we look outside we observe some effects These effects and some facts possibly explaining these effects are given in...
- Q Bodies that can be impregnated with water colours of their surface appear richer after moistening Which of the following is the most appropriate reason for this effect a Due to...
- Q When the Sun is behind dark clouds and there are gaps in the clouds you will often see sunlight fanning out from the gaps as shown in the given photograph...
- Q 5 A beam of light coming from a rarer medium is partially reflected from the surface of a denser medium and partially refracted into the denser medium If the reflected...
- Q 31 In a Young s double slit set up light from a laser source falls on a pair of very narrow slits separated by 1 0 micrometer and bright fringes...
- Q Angular width of a central max is 300 when the slit is illuminated by light of wavelength 6000 Then width of the slit will be approx a 12 x 10...
- Q Plane sound waves of wavelength 0 12 m are incident on two narrow slits in a box with non reflecting walls as shown At a distance of 5 0 m...
- Q 5 A parallel beam of light 2 5890 A is incident on thin glass plate u 1 5 such that the abgle of refraction into the plate is 60 Calculate...
- Q Draw the graph showing intensity distribution of fringes with phase angle due to diffraction through single slit OR What should be the width of each slit to obtain n maxima...
- Q 4 In Young s double slit experiment the slits are 0 5 mm apart and interference is observed on a screen placed at a distance of 100 cm from the...
- Q distance between two fringes from center Ans 2 One slit in Young s double slit experiment is wider than the other so that the amplitude of the light reaching the...
- Q wavelength in the visible region will be reflected most strongly Ans 5230 A In Newton s rings experiment the diameter of the 4th and 12th dark rings are 0 400...
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