Advertisements
Advertisements
प्रश्न
In a single slit diffraction pattern, the first minima obtained with the red light of wavelength 6600 A.U. coincides with the first maxima f some other wavelength λ then is ______
विकल्प
5500 A.U.
5000 A.U.
4800 A.U.
4400 A.U.
उत्तर
In a single slit diffraction pattern, the first minima obtained with the red light of wavelength 6600 A.U. coincides with the first maxima f some other wavelength λ then is 4400 A.U.
APPEARS IN
संबंधित प्रश्न
Derive the conditions for bright and dark fringes produced due to diffraction by a single slit.
What must be the ratio of the slit width to the wavelength of light for a single slit to have the first diffraction minimum at 45.0°?
Compare Young’s Double Slit Interference Pattern and Single Slit Diffraction Pattern.
Explain experimental setup for Fraunhofer diffraction with neat diagram.
Explain Fraunhofer diffraction at a single slit with a neat ray diagram. Obtain an expression for the width of the central bright fringe.
In biprism experiment, the distance between source and eyepiece is 1.2 m, the distance between two virtual sources is 0.84 mm. Then the wavelength of light used if eyepiece is to be moved transversely through a distance of 2.799 cm to shift 30 fringes is ______.
A slit of width a is illuminated by white light. For red light `(λ = 6500 Å)`, the first minima is obtained at θ = 60°. Then the value of a will be ______.
In Fraunhofer diffraction pattern, slit width is 0.2 mm and screen is at 4 m away from the lens. If wavelength of light used is 5500 Å, then the distance between the first minimum on either side of the central maximum is (`theta` is small and measured in radian) ____________.
A slit of width 'a' illuminated by white light. The first diffraction minimum for light of wavelength 6500 Å is formed at θ = 30°, then 'a' is (sin 30° = 0.5).
The condition for observing Fraunhofer diffraction pattern from an obstacle is that the light wavefront incident on it must be ______.
The diffraction fringes obtained by a single slit are of ____________.
A plane wavefront of wavelength `lambda`. is incident on a slit of width a. The angular width of principal maximum is ______.
A physical quantity P is described by the relation p = a1/2 b2 c3 d-4. If the relative errors in the measurement of a, b, c and d respectively, are 2%, 1%, 3% and 5%, then the relative error in P will be ______.
In a Young's double-slit experiment, let β be the fringe width, and let I0 be the intensity at the central bright fringe. At a distance x from the central bright fringe, the intensity will be ______.
The fringe width in a Young's double slit experiment can be increased if we decrease ______.
In Young's double experiment, in air interference pattern second minimum is observed exactly in front of one slit. The distance between the two coherent source is 'd' and the distance between source and screen is 'D'. The wavelength of light source used is ______.
In Fraunhoffer diffraction experiment, L is the distance between the screen and the obstacle, b is the size of the obstacle and λ is the wavelength of the incident light. The general condition for the applicability of Fraunhoffer diffraction is ______.
A mixture of light, consisting of wavelength 590 nm and an unknown wavelength, illuminates Young's double slit and gives rise to two overlapping intererence patterns on the screen. The central maximum of both lights coincides.
Further, it is observed that the third bright fringe of known light coincides with the 4th bright fringe of the unknown light. From this data the wavelength of the unknown light is ______.
In a Young’s experiment, two coherent sources are placed 0.90 mm apart and the fringes are observed one metre away. If it produces the second dark fringe at a distance of 1mm from the central fringe, then the wavelength of monochromatic light used will be ______.
The angular separation of the central maximum in the Fraunhofer diffraction pattern is measured. The slit is illuminated by the light of wavelength 6000 Å. If the slit is illuminated by light of another wavelength, the angular separation decreases by 30%. The wavelength of light used is ______.
In a Young's double slit experiment carried out with light of wavelength λ = 5000 Å, the distance between the slits is 0.2 mm and the screen is at 200 cm from the slits. The central maximum is at x = 0. The third maximum (taking the central maximum as zeroth maximum) will be at x equal to ______.
In Young's double slit experiment, which of the following graph represents the correct variation of fringe width β versus distance D between sources and screen?
In Young's double slit experiment using monochromatic light of wavelength λ, the maximum intensity of light at a point on the screen is K units. The intensity of light at point where the path difference is `lambda/3` is ______.
`[cos60^circ = sin30^circ 1/2]`
The first diffraction minimum due to single slit diffraction is θ, for a light wavelength 5000 Å. If the width of slit is 1 × 10-4 cm, then the value of θ is ______.
