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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The distance between an electric lamp and a screen is d= 1 m. A convergent lens of focal length f = 21 cm is placed between the lamp and the lens such that a sharp image of the

The distance between an electric lamp and a screen is d= 1 m. A convergent lens of focal length f = 21 cm is placed between the lamp and the lens such that a sharp image of the

The distance between an electric lamp and a screen is d= 1 m. A convergent lens of focal length f = 21 cm is placed between the lamp and the lens such that a sharp image of the