The image of a candle flame formed by a lens | vedclass

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

Question

(A) Given that the image is formed on a screen,it must be a real image.For a real image,the magnification $m$ is negative. Given $m = -3$.We know that

Vedclass · Accepted Answer

$26.67$

Vedclass · Answer

(A) Given that the image is formed on a screen,it must be a real image.For a real image,the magnification $m$ is negative. Given $m = -3$.We know that $m = \frac{v}{u}$,where $v$ is the image distance and $u$ is the object distance.Since the image is on the other side of the lens,$v = +80 \, cm$.Using the magnification formula: $-3 = \frac{80}{u}$.Therefore,$u = -\frac{80}{3} \, cm \approx -26.67 \, cm$.The negative sign indicates that the object is placed in front of the lens at a distance of $26.67 \, cm$.The nature of the image is real and inverted,and the lens used is a convex lens.

Similar Questions

$A$ ray of light passing through the principal focus of a concave mirror,after reflection,travels in which direction?

The rays travelling parallel to the principal axis after reflecting from the concave mirror pass or appear to pass through the focus.

What can be said about the magnification of an image formed by a convex mirror?

The refractive index of dense flint glass is $1.65$ and for alcohol it is $1.36,$ with respect to air. What is the refractive index of dense flint glass with respect to alcohol?

State the laws of refraction.

Vedclass Test Series

Exam Paper Generator

Online Exam Module