A) 62.5 cm
B) 50 cm
C) 40 cm
D) 37.5 cm
Correct Answer: C
Solution :
\[{{n}_{1}}{{l}_{1}}={{n}_{2}}{{l}_{2}}\Rightarrow 800\times 50=1000\times {{l}_{2}}\Rightarrow {{l}_{2}}=40\]\[cm\]You need to login to perform this action.
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