A) \[4{}^\circ \]
B) \[5.33{}^\circ \]
C) \[2.6{}^\circ \]
D) \[3{}^\circ \]
Correct Answer: D
Solution :
Angle of deviation\[\delta =(n-1)A\] Dispersion produced by both the prisms will be equal. \[({{n}_{1}}-1){{A}_{1}}=({{n}_{2}}-1){{A}_{2}}\] \[\Rightarrow \] \[{{A}_{2}}=\frac{({{n}_{1}}-1){{A}_{1}}}{({{n}_{2}}-1)}=\frac{(1.54-1)}{(1.72-1)}={{3}^{o}}\] Hence, the angle of prism\[{{P}_{2}}\]is\[{{3}^{o}}\].You need to login to perform this action.
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