Question

The sun subtends an angle of $\left(\frac{1}{2}\right)^\circ$ on earth. The image of sun is obtained on the screen with help of a convex lens of focal length 100 cm the diameter of the image obtained on the screen will be

• A. 18 cm
• B. 1 mm
• C. 50 cm
• D. 8.73 mm

Answer 1

Answer: (D)

8.73 mm

Answer 2

$D = f \times \theta$