Question
An object 2.5 cm high is placed at a distance of 10 cm from a concave mirror of radius of curvature 30 cm The size of the image is
Answer: Option D
:
D
R=−30cm⇒f=−15cm
O = +2.5 cm, u =-10 cm
By mirror formula 1−15=1v+1(−10)⇒v=30cm.
Also IO=−vu⇒I(+2.5)=−30(−10)⇒I=7.5cm.
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:
D
R=−30cm⇒f=−15cm
O = +2.5 cm, u =-10 cm
By mirror formula 1−15=1v+1(−10)⇒v=30cm.
Also IO=−vu⇒I(+2.5)=−30(−10)⇒I=7.5cm.
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