In YSDE, both slits are covered by transparent slab. Upper slit is cov – McqOptions

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1.	In YSDE, both slits are covered by transparent slab. Upper slit is covered by slab of R.I. 1.5 and thickness t and lower is covered by R.I. \[\frac{4}{3}\] and thickness 2t, then central maxima
A.	shifts in +ve y-axis direction
B.	shifts in -ve y-axis direction
C.	remains at same position
D.	may shift in upward or downward depending upon wavelength of light
Answer» C. remains at same position

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