In a spectrometer experiment, monochromatic light is incident normally on a diffraction grating having `4.5xx10^5` lines per metre. The seond order line is seen at an angle of `30^@` to the normal. What is the wavelength of the light?

A parallel bean of monochromatic light is allowed to incident normally on a plane transmission grating having 5000 lines per centimeter. A second order spectral line is found to be diffracted at an angle 30^(@) . Find the wavelength of the light. Data : N=5000 lines/cm =5000xx10^(2) lines/m, m=2 , theta=30^(@) , lambda=?

Light is incident normally on a diffraction grating through which the first order diffraction is seen at 32^@ . The second order diffraction will be seen at

Light is incident normally on a diffraction grating through which the first order diffraction is seen at 32^@ . The second order diffraction will be seen at

Aparallel beam of sodium lignt falls normally of a plane grating having 4240 lines per cm. A second order line is obseved at 30^(@) to the normal. Find the wavelength. What is the highest order that can be observed with this grating? Will this line appear to be of the same colour in each order ?

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 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 diffraction grating is ruled with 600 lines per millimetre. When monochromatic light falls normally on the grating, the first order diffracted beams are observed on the far side of the grating each making an angle of 15^@ with the normal to the grating. What is the frequency of the light?