A slit 4.0 cm wide is irradiated with microwaves of wavelength 2.0 cm .Fin the angular spread of central maxima assuming incidence normal to the plane of the slit.

In a Young's double slit experiment,two slits are 1.5 mm apart and a screen in placed at a distance 1.2 m from the plane of the slits .The slits are illuminated with light of wavelength 6,000 overset @A .Find the inimum distance from the central maximum for which the intensity is half of the maximum intensity.

The light of wavelength 600 nm is incident normally on a slit of width 3 mm. Calculate the linear width of central maximum on a screen kept 3 m away from the slit.

The direction ratios of a line normal to the plane x+2y-3z+4=0 are

Direction cosines of the normal to the plane: 2x-3y+4z-6=0 are :

In Young's double slit experiment,two slits are separated by 3 mm distance and illuminated by ligth of wavelength 480 nm.The screen is at 2 m from the plane of the slits.Calculate the separtion between the 8th bright finge and the 3rd dark fringe obsrved with respect to the central brigth fringe.

Change to normal form the plane 2x-3y+6z+4=0

A parallel beam of monochromatic light falls normally on a single narrow slit. How does the angular width of the central maximum in the resulting diffraction pattern depend on the wavelength of the incident light?

Two slits 0.125 mm aprt are illuinated by igth of wavelength 4500 ^@A .The screen is one metre way from the plane of the slits.Find the separation between the second bright fringes on both sides of the central maximum.

A screen is placed 2 m away from a narrow slit.Find the sit width ,if the first minimum lies 5 mm on eighter side of the central maximum,when plane waves of 5 xx 10^(-7) m are incident on the slit.

One method of prodocing two in - phase point sources of light for interference is to form two images of a point source by means of the two halves of a lens,which has been split along a diameter[Fig.6.17]. A screen placed perpendicular tot he principal axis and 80 cm from the mage sources.What is the width of central maxima formed on the screen,if the wavelength of the light used is 5.4 xx 10^(-5) cm ?