Physics-
General
Easy
Question
M1 and M2 are two plane mirrors which are kept parallel to each other as shown. There is a point 'O' on perpendicular screen just infront of 'S'. What should be the wavelength of light coming from monchromatic source 'S'. So that a maxima is formed at 'O' due to interference of reflected light from both the mirrors. [Consider only 1st reflection]. 
The correct answer is:
The 2 sources are. As O is a maxima,
Related Questions to study
physics-
An interference is observed due to two coherent sources 'A' & 'B' having phase constant zero separated by a distance 4 
along the y - axis where is the wavelength of the source. A detector D is moved on the positive x - axis. The number of points on the x - axis excluding the points , 
sat which maximum will be observed is
An interference is observed due to two coherent sources 'A' & 'B' having phase constant zero separated by a distance 4 along the y - axis where is the wavelength of the source. A detector D is moved on the positive x - axis. The number of points on the x - axis excluding the points , sat which maximum will be observed is
physics-General
physics-
In the figure shown, a parallel beam of light is incident on the plane of the slits of Young's double slit experiment. Light incident on the slit, 
passes through a medium of variable refractive index 
(where 'X' is the distance from the plane of slits as shown), up to a distance '' before falling on . Rest of the space is filled with air. If at 'O' a minima is formed, then the minimum value of the positive constant a (in terms of l and wavelength '' in air) is:
In the figure shown, a parallel beam of light is incident on the plane of the slits of Young's double slit experiment. Light incident on the slit, passes through a medium of variable refractive index (where 'X' is the distance from the plane of slits as shown), up to a distance '' before falling on . Rest of the space is filled with air. If at 'O' a minima is formed, then the minimum value of the positive constant a (in terms of l and wavelength '' in air) is:
physics-General
physics-
Two coherent light sources each of wavelength are separated by a distance 3. The total number of minima formed on line AB which runs from - 
to + is
Two coherent light sources each of wavelength are separated by a distance 3. The total number of minima formed on line AB which runs from - to + is
physics-General
chemistry-
Which of the following has no co-ordinate bond?
Which of the following has no co-ordinate bond?
chemistry-General
chemistry-
The strength of bonds by 2s-2s, 2p-2p and 2p-2s overlapping has the order:
The strength of bonds by 2s-2s, 2p-2p and 2p-2s overlapping has the order:
chemistry-General
physics-
In the figure shown if a parallel beam of white light is incident on the plane of the slits then the distance of the nearest white spot on the screen from O is: [assume 
]
In the figure shown if a parallel beam of white light is incident on the plane of the slits then the distance of the nearest white spot on the screen from O is: [assume ]
physics-General
physics-
To make the central fringe at the centre O, a mica sheet of refractive index 1.5 is introduced. Choose the correct statements (s)-
To make the central fringe at the centre O, a mica sheet of refractive index 1.5 is introduced. Choose the correct statements (s)-
physics-General
physics-
Current in the main circuit shown is
Current in the main circuit shown is
physics-General
physics-
The figure below shows current in a part of electric circuit The current i is
The figure below shows current in a part of electric circuit The current i is
physics-General
physics-
The effective resistance between A and B in the given circuit is
The effective resistance between A and B in the given circuit is
physics-General
physics-
The effective resistance between A and B is 3 
then the value of R is
The effective resistance between A and B is 3 then the value of R is
physics-General
physics-
The effective resistance between A&B in the given circuit is
The effective resistance between A&B in the given circuit is
physics-General
physics-
The current 'i' in the circuit given aside is
The current 'i' in the circuit given aside is
physics-General
physics-
Three resistances each of 3 are connected as shown in fig The resultant resistance between A and F is
Three resistances each of 3 are connected as shown in fig The resultant resistance between A and F is
physics-General
chemistry-
Valence bond theory explains the magnetic behavior of coordination species Depending upon the magnetic behavior one can understand whether the inner d- orbitals or outer d- orbitals are being used in a particular hybrid station However, the colours of coordination species can he explained by the crystal filed theory.
Which of the following compounds is diamagnetic as well as coloured
Valence bond theory explains the magnetic behavior of coordination species Depending upon the magnetic behavior one can understand whether the inner d- orbitals or outer d- orbitals are being used in a particular hybrid station However, the colours of coordination species can he explained by the crystal filed theory.
Which of the following compounds is diamagnetic as well as coloured
chemistry-General
