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Popular Questions
- In youngs experiment , the ratio of maximum to minimum intensities of the fringe system is 4:1 . The amplitude of the coherent sou..
- A is an essential condition for coherent sources. Here, A refers to
- An interference pattern was made by using red light. If the red light changes with blue light , the fringes will become.
- A parallel beam of fast moving electrons is incident normally on a narrow slit. A screen is placed at a larger distance from the s..
- A very thin film that reflects white light appears.
- In the interference pattern, energy is
- The bending of beam of light around corners of obstacles is called
- Two coherent monochromatic beams of intensities I and 4I respectively are superposed. The maximum and minimum intensities in the r..
- in Youngs double-slit experiment, a monochromatic source
- Two slits in Youngs experiment have widhts in the ratio 1: 25. The ratio of intensity at the maximum and minimum in the interferen..
- In Youngs double slit experiment, the slit width and the distance of slits from the screen both are doubled. The fringe width
- In a given direction, the intensities of the scattered light by a scattering substance for two beams of light are in the ratio of ..
- In Youngs double slit experiment if the slits widths are in the ratio 1 : 9, the ratio of the intensities at minima to that at max..
- statement 1: Davisson - Gemer experiment established the wave
- statement 1: when ultraviolet light is incident on a photocell,
- Soap bubble appears coloured due to the phenomenon of
- this question has statement 1 and statement 2. of the four
- In a double slit interference experiment, the fringe width obtained with a light of wavelength 5900 A was 1.2 mm for parallel narr..
- the work function of a substance is 4.0 eV. the longest
- For sustained interference fringes in double slit experiment, essential conditions is/are I. sources must be coherent II. the inte..
- A pipe of length 85 cm is closed from one end. find the number
- Assuming human pupil to have a radius 0.25cm
- the intensity of Gamma radiation from a given source is i. on passing through
- The diagram below shows, two sources A and B, vibrating in phase, in the same uniform medium and producing circular wave fronts. W..
- assuming human pupil to have a radius of 0.25 cm and a comfortable
- sodium and copper have work functions 2.3 e V and 4.5 eV
- Which of the following cannot be explained on the basis of wave nature of light? I. Polarisation II. Optical activity III. Photoel..
- Direction: the question has a paragraph following by two statements, statement 1and statement 2.
- A sound absorber attenuates the sound level by 20 dB.
- Which of the following generates a plane wavefront?
- a cylindrical tube, open at both ends, has a fundamental frequency.
- Monochromatic green light of wavelength 5×10^7 m illuminates a pair of slits 1 mm apart. The separation of bright line on the ..
- the function of covalent bonds in compounds exhibits
- Soap bubble appears coloured due to the phenomenon of
- If the two slits in Youngs double slit experiment are of unequal width, then
- a sonometer wire of length 1.5 m is made of steel. the
- Select the right option in the following
- The penetration of light into the rigion of geometrical Shadow is called
- On a hot summer night the refractive index
