Same chapter3 marksDifficulty: Medium
Where must an object be placed in front of a converging lens for the image to be virtual, erect and magnified? Name one use of this arrangement.
Refraction through a Lens
3 marksDifficulty: Medium
An object is placed 30 cm from a converging lens of focal length 10 cm. Find the position of the image and state its nature.
Original Khojo Papers practice question — not from a past board paper.
Answer
The image is formed 15 cm from the lens on the opposite side; it is real and inverted.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Using 1/v − 1/u = 1/f with u = −30 cm and f = +10 cm gives 1/v = 1/10 − 1/30 = 2/30, so v = +15 cm. A positive v for a converging lens means a real, inverted image on the far side.
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