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A point object O is placed in front of a...

A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 cm. The image would be formed at

A

30 cm left

B

infinity

C

1 cm to the right

D

18 cm to the left.

Text Solution

Verified by Experts

The correct Answer is:
A
By using formula, `(mu_(2))/(v) - (mu_(1))/(u) = (mu_(2) - mu_(1))/( R)`
`rArr " " (1.5)/(v) - (1)/((-15)) = ((1.5 - 1))/(+30) rArr v = - 30 cm`
Negataive sign shows that, image is obtained on the same side of object i.e., towards left
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Knowledge Check

  • A point object is placed at the centre of a glass sphere of radius 6 cm and mu = 1.5 . The distance of virtual image from the surface of sphere is :

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