20. When you lock at a single slit diffraction pattem prodaced on a scron by hsg

Question

20. When you lock at a single slit diffraction pattem prodaced on a scron by hsgle wavelengh, you se bright central maximum and a nuenber of maxima on either sile, their intersity dereing wih central maximutm. If the wvelength of the light is increosed (a) The patern shrinks in sizr (central masi (b) The parens increases in sine. (central masimam wider, other maxina Srther from i) (e) It does noc affect the size of the patem. (d) The width of the central maximum increases, but the osher aasima don not change in poniion or widh (e) The width of the censeal masimum decres,bud the other masima dos sot change in peaition or widh mun less wide; other maxina ia clkner 21. A fancy sports car passes Big Ben at a speed of 0.se.What time inmerval will the driver meaure for s ond

Explanation / Answer

in a single slit diffration pattern condition for diffraction minima is

a sin ( theata ) = m * wave length of the source of light

here in the given options option b is the correct one

as the wavelenght increases angular position of the diffraction minimum shifts away from the central position

pattern increases in size ( central maximum wider and other maximums farther from it.

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