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A concave mirror produces three times magnified image on a screen. If the object is placed 20 cm in front of the mirror, how far is the screen from the object? |
Answer» <html><body><p><strong>Answer:</strong></p><p>distance of <a href="https://interviewquestions.tuteehub.com/tag/screen-25632" style="font-weight:bold;" target="_blank" title="Click to know more about SCREEN">SCREEN</a> from mirror = image distance</p><p><strong>Explanation:</strong></p><p><a href="https://interviewquestions.tuteehub.com/tag/magnification-1083057" style="font-weight:bold;" target="_blank" title="Click to know more about MAGNIFICATION">MAGNIFICATION</a>(m)= +3.0 or 3</p><p>object distance(u)= <a href="https://interviewquestions.tuteehub.com/tag/20-287209" style="font-weight:bold;" target="_blank" title="Click to know more about 20">20</a> cm</p><p>image distance(v)= ?</p><p></p><p> m= -v/u </p><p>=> 3 = -v/-20</p><p>=> v = 20 x 3</p><p>=> v= +60 cm</p><p></p><p></p><p></p><p>plz mark me as the brainliest.</p></body></html> | |