Mathematics in Physics

JEE Main level, single correct, medium

81 of 121

Question 81 of 121

The distance of the Sun from earth is 1.5×1011m1.5\times {10}^{11}m and its angular diameter is 2000′′2000'' when observed from the earth. The diameter of the Sun will be

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Answer: (C) 1.45×109m1.45\times {10}^{9}m

Diameter of Sun is D=rθD=r\theta
=1.5×1011×(2000)×(13600)×(π180)=1.45×109m\begin{matrix}=1.5\times {10}^{11}\times (2000)\times \left(\dfrac{1}{3600}\right)\times \left(\dfrac{\pi }{180}\right) \\ =1.45\times {10}^{9}m\end{matrix}

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