A) 1.04°
B) 5°
C) 0.96°
D) 13.5°
Correct Answer: D
Solution :
For achromatic combination\[{{\omega }_{C}}=-{{\omega }_{F}}\] \[{{[({{\mu }_{v}}-{{\mu }_{r}})A]}_{C}}=-{{[({{\mu }_{v}}-{{\mu }_{r}})A]}_{F}}\] \[\Rightarrow \]\[{{[{{\mu }_{r}}A]}_{C}}+{{[{{\mu }_{r}}A]}_{F}}={{[{{\mu }_{v}}A]}_{C}}+{{[{{\mu }_{v}}A]}_{F}}\] \[=\] \[1.5\times 19+6\times 1.66=38.5\] Resultant \[\delta ={{[({{\mu }_{r}}-1)Al]}_{C}}+{{[({{\mu }_{r}}-1)A]}_{F}}\] \[=\] \[{{[{{\mu }_{r}}A]}_{C}}+{{[{{\mu }_{r}}A]}_{F}}-({{A}_{C}}+{{A}_{F}})\]=\[38.5-(19+6)={{13.5}^{o}}\]You need to login to perform this action.
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