Subject: Science, asked 2 hours, 23 minutes ago

## 27. In the determination of focal length of a convex lens, image of grill of a window is formed on a screen. The index mark of screen holder is 37-5 cm and that of lens holder is 16-2 cm. The distance of grill from the lens is 2-5 m. Focal length of lens is (a) 25 m (b) 37-5 cm (c) 162 cm (d) 21-3 cm

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Subject: Maths, asked 16 hours, 9 minutes ago

## Square root of 4.36 and 9.8( step by step)

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