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Consider the situation shown in figure. The two slits S_(1) and S_(2) placed symmetrically around the central line are illuminated by a monochromatic light of wavelength lambda. The separation between the slits is d. The light transmitted by the slits falls on a screen Sigma_(1) placed at a distance D from the slits. The slit S_(3) is at the central line and the slit S_(4) is at distance z from S_(3). Another screen Sigma_(2) is placed a further distance D away from Sigma_(1). Find the ratio of the maximum to minimum intensity observed on Sigma_(2) if z equal to (1) z = (lambda D)/(2d) (2) (lambda D)/(d) (3) (lambda D)/(4d) |
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Answer» `2, 25 , OO` |
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