Two plane mirrors, a source S of light, emitting wavelengths of` lambda_(1) = 4000overset(@)A" and" lambda_(2) = 5600overset(@)A`and a screen are arranged as shown in figure. The angle `theta` shown is 0.05 radian and distance a and b are 1 cm and 38 cm respectively.(a) Find the fringe width of interference pattern formed on screen by the blue light. (b) Calculate the distance of first black line from central bright fringe. (c) Find the distance between two black lines which are nearest to the central bright fringe.

Two plane mirrors, a source S of light, emitting wavelengths of` lambd

1.	Two plane mirrors, a source S of light, emitting wavelengths of` lambda_(1) = 4000overset(@)A" and" lambda_(2) = 5600overset(@)A`and a screen are arranged as shown in figure. The angle `theta` shown is 0.05 radian and distance a and b are 1 cm and 38 cm respectively.(a) Find the fringe width of interference pattern formed on screen by the blue light. (b) Calculate the distance of first black line from central bright fringe. (c) Find the distance between two black lines which are nearest to the central bright fringe.
Answer» Correct Answer - (a)`80mu"m"` (b)280`mu"m"`(`c)560mu"m"`

Discussion

No Comment Found

Related InterviewSolutions

Angular width of central maxima in the Fraunhofer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength `6000Å`. When the slit is illuminated by light of another wavelength, the angular width decreases by 30%. The wavelength of this light will beA. `3500 Å`B. `4200 Å`C. `4700 Å`D. `6000 Å`
Find the half angular width of the central bright maximum in the fraunhofer diffraction pattern of a slit of width `12xx10^(-5)cm` when the slit is illuminated by monochromatic light of wavelength 6000 Å.
Find the half angular width of the central bright maximum in the fraunhofer diffraction pattern of a slit of width `12xx10^(-5)cm` when the slit is illuminated by monochromatic light of wavelength 6000 Å.A. `40^(@)`B. `45^(@)`C. `30^(@)`D. `60^(@)`
In a single slit diffraction, the width of slits is `0.5cm`, focal length of lens is 40 cm and of first dark fringe is
What will be the angular width of central maxima in Fraunhofer diffraction when light of wavelength `6000Å` is used and slit width is `12xx10^-5cm`?A. (a) `2rad`B. (b) `3rad`C. (c) `1rad`D. (d) `8rad`
A light wave is incident normally over a slit of width `24xx10^-5cm`. The angular position of second dark fringe from the central maxima is `30^@`. What is the wavelength of light?A. `6000 Å`B. `5000 Å`C. `3000 Å`D. `1500 Å`
Light of wavelength `6328 Å` is incident normally on a slit of width 0.2 mm. Angular width of the central maximum on the screen will be :A. `0.9^(@)`B. `0.18^(@)`C. `0.54^(@)`D. `0.36^(@)`
Light of wavelength `6328 Å` is incident normally on a slit of width 0.2 mm. Angular width of the central maximum on the screen will be :A. `0.36^(@)`B. `0.18^(@)`C. `0.72^(@)`D. `0.09^(@)`
Light wavelength 6000 Å is incident normally on a slit of width `24xx10^(-5)` cm. find out the angular position of seconds minimum from central maximum?A. `12 xx 10^(-5)cm`B. `18xx10^(-5)cm`C. `24xx10^(-5)cm`D. `36xx10^(-5)cm`
Light wavelength 6000 Å is incident normally on a slit of width `24xx10^(-5)` cm. find out the angular position of seconds minimum from central maximum?

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment