The image of a distant object is obtained on a screen by using a concave mirror. The focal length of the mirror

Monjur Alahi

The image of a distant object is obtained on a screen by using a concave mirror. The focal length of the mirror can be determined by measuring the distance between 

A) The object and the screen 

B) The object and the mirror 

C) The mirror and the screen as that between the object and the screen 

D) The mirror and the screen


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Salim Ahmed Kawsar

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D) The mirror and the screen

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