In YDSE set up (see fig.), the light sources executes SHM between P and Q according to the equation `x = A sin omega t`, S being the mean position. Assume `d rarr 0` and `A lt lt L`. `omega` is small enough to neglect Doppler effect. If the sources were stationary at S, intenstiy at O would be `I_(0)` Read the paragraph carefully and answer the following questions. The fringe width `beta` can be expressed asA. `beta = beta_(0) sin omega t`B. `beta = beta_(0) cos omega t`C. `beta = beta_(0) sin 2 omega t`D. none of these

In YDSE set up (see fig.), the light sources executes SHM between P an

1.	In YDSE set up (see fig.), the light sources executes SHM between P and Q according to the equation `x = A sin omega t`, S being the mean position. Assume `d rarr 0` and `A lt lt L`. `omega` is small enough to neglect Doppler effect. If the sources were stationary at S, intenstiy at O would be `I_(0)` Read the paragraph carefully and answer the following questions. The fringe width `beta` can be expressed asA. `beta = beta_(0) sin omega t`B. `beta = beta_(0) cos omega t`C. `beta = beta_(0) sin 2 omega t`D. none of these
Answer» Correct Answer - d `beta = (lambda D)/(d) =` constant

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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`
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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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