NEET UG · Physics

Ray optics

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

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

All 5 questions

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 $10 cm$ . 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 equiconvex lens of glass (refractive index $1.6$ ) has both radii of curvature equal to $16 cm$ . It is completely immersed in a liquid of refractive index $1.4$ . What is its focal length in…
A convex lens of focal length $20 cm$ has a plane mirror placed $20 cm$ behind it, perpendicular to the axis. A point object is $30 cm$ in front of the lens. The final image, f…

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