Lights of wavelengths `lambda_(1)=4500 Å, lambda_(2)=6000 Å` are sent through a double slit arrangement simultaneously. ThenA. no interference pattern will be formedB. the third order bright fringe of `lambda_(1)` will coincide with the fourth order bright fringe of `lambda_(2)`C. the third order bright fringe of `lambda_(2)` will coincide with the fourth order bright fringe of `lambda_(1)`D. the fringes of wavelength `lambda_(1)` will be wider than the fringes of wavelength `lambda_(2)`

Lights of wavelengths `lambda_(1)=4500 Å, lambda_(2)=6000 Å` are sen

1.	Lights of wavelengths `lambda_(1)=4500 Å, lambda_(2)=6000 Å` are sent through a double slit arrangement simultaneously. ThenA. no interference pattern will be formedB. the third order bright fringe of `lambda_(1)` will coincide with the fourth order bright fringe of `lambda_(2)`C. the third order bright fringe of `lambda_(2)` will coincide with the fourth order bright fringe of `lambda_(1)`D. the fringes of wavelength `lambda_(1)` will be wider than the fringes of wavelength `lambda_(2)`
Answer» Correct Answer - C

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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.
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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^(@)`
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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?

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