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
Correct Answer: B
Solution :
[b] \[\Delta {{x}_{1}}=({{\mu }_{1}}-1)t=(1.5-1)t=0.5t\] and \[\Delta {{x}_{2}}=({{\mu }_{2}}-1)\times 2t=\left( \frac{4}{3}-1 \right)\times 2t=\frac{2}{3}t\] As \[\Delta {{x}_{2}}>\Delta {{x}_{1}}\], so shift will be along -ve v-axis.
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