A beam of light incident on a thin concave lens parallel to its principal axis diverges and appears to come from a point on the principal axis. Name the point :

First focus

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Second focus

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

First centre

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Second centre

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Second focus
A beam of light parallel to the principal axis upon passing through the concave lens diverges. The divergent rays produced backwards appear to come from the second principal focus of the lens.

Suggest Corrections

Similar questions

A beam of light incident on a thin concave lens parallel to its principle axis diverges and appears to come from a point F on the principal axis. Name the point F. Draw a ray diagram to show it.

Q. A beam of light incident on a convex lens parallel to its principal axis converges at a point on the principal axis. Name the point :

A beam of light incident on a convex lens parallel to its prinicpal axis converges at a point F on the principal axis. Name the point F. Draw a ray diagram to show it.

Q. A ray of light, after refraction through a convex lens emerges parallel to the principal axis. The incident ray when produced appear to come from a point on principal axis. Name the point :

A beam of light travelling parallel to the principal axis of a concave lens appears to diverge from a point 25 cm behind the lens after refraction. Calculate the power of the lens.

Join BYJU'S Learning Program

A beam of light incident on a thin concave lens parallel to its principal axis diverges and appears to come from a point on the principal axis. Name the point :

The correct option is B Second focusA beam of light parallel to the principal axis upon passing through the concave lens diverges. The divergent rays produced backwards appear to come from the second principal focus of the lens.

The correct option is B Second focus
A beam of light parallel to the principal axis upon passing through the concave lens diverges. The divergent rays produced backwards appear to come from the second principal focus of the lens.