Home
Class 12
PHYSICS
For what distance is ray optics a good a...

For what distance is ray optics a good approximation when the aperture is 3 mm wide and the wavelength is 500 nm?

Text Solution

Verified by Experts

For distance `Z le Z_(F)`,
ray optics is the good appropriate
Fresnel distance `Z_(F)= (a^2)/(lambda)= ((3xx10^(-3))^2)/(5xx 10^(-7))= 18m`.
Promotional Banner

Topper's Solved these Questions

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -IA|54 Videos

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -IA (DIFFRACTION)|33 Videos

  • WAVES

    AAKASH SERIES|Exercise EXERCISE-III (Doppler effect :)|15 Videos

Similar Questions

Explore conceptually related problems

For what distance is ray optics a good approximation when the aperture is 4 mm wide and the wavelength is 500 nm?

For what distance is ray optics a good approximation when the aperture is 2 mm wide and wavelength is 600 nm ?

For what distance is ray optics a good approximation when the aperture is 2 mm wide and wavelength is 600 nm ?

Estimate the distance for which ray optics is good approximation for an aperture of 4 mm and wavelength 400 nm .

Estimate the distance for which ray optics is good approximation for an aperture of 4 mm and wavelength 400 nm .

Estimate the distance for which ray optics is good approximately for an aperture of 2mm and wavelength 500 nm.

The distance upto which ray optics holds good is called

In a YDSE, distance between the slits and the screen is 1m, separation between the slits is 1mm and the wavelength of the light used is 5000nm . The distance of 100^(th) maxima from the central maxima is:

A beam of light consisting of two wavelengths 650 nm and 520 nm is used to obtain interference fringes in a Young's double slit experiment. (a) Find the distance of the third bright fringe on the screen from the central maximum for the wavelength 650 nm . (b) What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide? The distance between the slits is 2 mm and the distance between the plane of the slits and screen is 120 cm .

A beam of light consisting of two wavelengths, 650 nm and 520 nm is used to obtain interference fringes in Young's double-slit experiment. What is the least distance (in m) from a central maximum where the bright fringes due to both the wavelengths coincide ? The distance between the slits is 3 mm and the distance between the plane of the slits and the screen is 150 cm.