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a object placed prpendicular to principle axis of focul length 10cm and object distance 10cm find v( image distance

Posted by Arjun Singh 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 8 months ago

Focal length f = 10 cm

Object distance u = -15 cm

Image distance v= ?

The lens formula is 1/f = 1/v - 1/u
1/v = 1/u + 1/f
1/v = 1/-15 + 1/10
1/v = -2+3/30
1/v = 1/30 or v = 30
The positive sign of v shows that the image is formed at a distance of 30 cm on the other side of optical centre. The image is real and inverted.

1Thank You

ANSWER

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CBSE > Class 10 > Science