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An object of height 4cm is …

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An object of height 4cm is placed on the principal exis of concave mirror of focal lens 20 cm kept the virtual image at a distance of 10 cm from its pole then find the size of image

Posted by Khushiraj Kharte 4 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Kriti Singh 4 years, 10 months ago

Given, U=-10cm H=4cm F=-20cm By mirror formula,1/f=1/v-1/u 1/v=1/f-1/u=1/20-1/10=-20 Now,V=-20cm M=-v/u=-(-20/-10)=-2 M=H'/H = -2=H'/4 H=4*-2=-8 Hence, the hight of image is 8 cm

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Posted by Pandey Ji 5 months, 3 weeks ago

CBSE > Class 10 > Science