Which of the following lenses would you prefe | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) convex lens produces a magnified,virtual,and erect image when an object is placed within its focal length.Magnification $(m)$ for a lens is given

Vedclass · Accepted Answer

$A$ convex lens of focal length $5 \, cm$

Vedclass · Answer

(D) convex lens produces a magnified,virtual,and erect image when an object is placed within its focal length.Magnification $(m)$ for a lens is given by the formula $m = f / (f + u)$,where $f$ is the focal length and $u$ is the object distance.For a given object distance,a lens with a shorter focal length provides higher magnification.Therefore,to read small letters,a convex lens with a shorter focal length $(5 \, cm)$ is preferred over one with a longer focal length $(50 \, cm)$ to obtain a larger image.

Which of the following lenses would you prefer to use while reading small letters found in a dictionary?

Similar Questions

$A$ ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal? Why?

The image formed by a concave mirror is observed to be virtual,erect and larger than the object. Where should be the position of the object?

The magnification produced by a plane mirror is $+1$. What does this mean?

$A$ convex lens forms a real and inverted image of a needle at a distance of $50\, cm$ from it. Where is the needle placed in front of the convex lens if the image is equal to the size of the object? Also,find the power of the lens.

$A$ doctor has prescribed a corrective lens of power $+1.5\, D.$ Find the focal length of the lens. Is the prescribed lens diverging or converging?

Vedclass Test Series

Exam Paper Generator

Online Exam Module