A topic you 'somewhat know' is a topic you don't know yet. Be honest about your weak areas.

Heat, Light and Sound — quick quiz

2 OTET-pattern questions on Heat, Light and Sound. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 2

Hard

A convex lens of focal length 20 cm forms an image of an object placed 30 cm from the lens. What is the nature and position of the image formed?