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

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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
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Oct
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 [...]
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