Question
OA is an object with object size 4 cm and O'A' is the image of the object. Find the height of the image formed.
Answer: Option B
:
B
Given:
Object size, ho=4 cm
Object distance, u=−30 cm
Image distance, v=15 cm
Let image size be hi.
Magnification of a lens is given by:
m=vu=hiho
+15−30=hi4
hi=−2 cm
Hence, image height is 2 cm and negative sign shows that the image is inverted.
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:
B
Given:
Object size, ho=4 cm
Object distance, u=−30 cm
Image distance, v=15 cm
Let image size be hi.
Magnification of a lens is given by:
m=vu=hiho
+15−30=hi4
hi=−2 cm
Hence, image height is 2 cm and negative sign shows that the image is inverted.
Was this answer helpful ?
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