CBSE Class 12 · Physics

Ray optics

10 practice questions, each with the answer and an explanation.

Practise Ray optics now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 10 questions

An object is placed $40 cm$ in front of a convex lens of focal length $30 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $60 cm$ in front of a convex lens of focal length $15 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $60 cm$ in front of a convex lens of focal length $30 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $60 cm$ in front of a convex lens of focal length $20 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $30 cm$ in front of a convex lens of focal length $10 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $40 cm$ in front of a convex lens of focal length $10 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $30 cm$ in front of a convex lens of focal length $20 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $40 cm$ in front of a convex lens of focal length $20 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $30 cm$ in front of a convex lens of focal length $15 cm$ . At what distance from the lens (in cm) is the image formed?
An object is placed $40 cm$ in front of a convex lens of focal length $15 cm$ . At what distance from the lens (in cm) is the image formed?

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