Intensity Amplitude Relationship
Q. Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beams is π2 at point A and π at point B. Then, the difference between the resultant intensities at A and B is
- 2 I
- 4 I
- 5 I
- 7 I
Two coherent sources of intensity ratio β interfere. Find the ratio [Imax−Imin][Imax+Imin] in the interference pattern.
Q. Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beams is π2 at point A and 2π at point B. Then the difference between the resultant intensities at B and A will be
Q. The ratio of amplitudes of two waves having same frequency is 3:1. Find the ratio of maximum and minimum intensities.
Q. Two coherent sources of equal intensities produce a maximum of 100 units. If the amplitude of one of the sources is reduced by 20%, then the maximum intensity produced will be:
Q. In a Young's double slit experiment the intensity at a point where the path difference is λ6 (λ being the wavelength of the light used) is I. If I0 denotes the maximum intensity, II0 is equal to
Q. In a YDSE apparatus, two identical slits are separated by 1 and distance between the slits and screen is 1m.The wavelength of light used is 6000A∘. The minimum distance between two points on screen having 75% intensity of the maximum intensity is :
Q. The optical path difference between the two identical waves arriving at a point 75.5λ. Is the point bright or dark?
- neither bright nor dark
- none of the above
Q. In Young's double slit experiment, wavelength of light is 6000˚A. Then the phase difference between the light waves reaching the third bright fringe from the central fringe will be:
Q. Light of wavelength 583.3 nm is incident normally on the slit of width 0.1 mm. What will be the angular width of the central diffraction maximum at a distance of 1m from the slit in degrees
- None of these