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An arrow 2.5 cm high is …

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An arrow 2.5 cm high is placed at a distance of 25 cm from a diverging mirror of focal length 20 cm . Find the nature , position and size of the image

Posted by Manas Gupta 5 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Anshuman Omm 5 years, 3 months ago

U=-25cm f=20cm h=2.5cm 1/v +1/u=1/f 1/v=1/f -1/u 1/v =1/20 -1/-25 1/v=1/20+1/25 1/v=9/100 v=100/9=11.1cm -v/u=-11.1/-25 -v/u=11.1/25 h'/h=11.1/25 h'=11.1*2.5/25 h'=1.11 Position of image is behind the mirror 11.1cm. As v is positive it is virtual and erect. size of image is diminished.

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CBSE > Class 10 > Science