A) \[1.74cm\]
B) \[0.87cm\]
C) \[0.435cm\]
D) \[100cm\]
Correct Answer: B
Solution :
The angle subtended by the image of the sun at the mirror \[=3{0}'={{\left( \frac{1}{2} \right)}^{o}}=\frac{\pi }{360}\,\,rad\] If \[x\] be the diameter of the image of the sun, then \[\frac{\text{Arc}}{\text{Radius}}=\frac{x}{100}=\frac{1}{2}.\frac{2\pi }{360}=\frac{\pi }{360}\]\[\Rightarrow \,\,x=\frac{100\pi }{360}=0.87\,cm\]You need to login to perform this action.
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