JEE Main · PhysicsEasy

$An object is placed at u = - 15 cm from a convex lens of focal length f = + 10 cm . Where is the image v formed?$

A. $v = 30 cm$
B. $v = - 30 cm$
C. $v = 15 cm$
D. $v = - 15 cm$

Show correct answer & step-by-step solution

Correct answer: A — $v = 30 cm$

Solution

Using the lens formula \frac{1}{v} - \frac{1}{u} = \frac{1}{f}, we get \frac{1}{v} - \frac{1}{- 15} = \frac{1}{10} . This simplifies to \frac{1}{v} = \frac{1}{10} - \frac{1}{15} = \frac{1}{30}, so v = 30 cm .

Attempt this question & track your score

Sign up free to answer, get instant scoring, and let SolveGini track which Physics topics you need to revise.

Attempt & Track Free →

More Ray Optics practice questions

$A concave mirror has a focal length of 20 cm. If an object is placed at a distance of 30 cm from the mirror, what is the$
$The refractive index of glass with respect to air is 1.5. What is the speed of light in glass if the speed of light in a$
$A thin convex lens has a power of 2.0 Diopters. What is its focal length in meters?$
$Which of the following phenomena explains the formation of a rainbow?$
$An object is placed at a distance of 10 cm from a convex lens of focal length 15 cm. What is the nature of the image?$
$A point object is placed at a distance of 30 cm from a convex lens of focal length 20 cm. A convex mirror of radius of c$
$A ray of light enters a glass slab of thickness 10 cm and refractive index 1.5 at an angle of 45 degrees. What is the la$
$A thin prism of angle 6 degrees and refractive index 1.5 is combined with another thin prism of refractive index 1.7 to$
$A fish in a pond at a depth of 20 cm looks up at a bird flying at a height of 30 cm above the water surface. What is the$
$A biconvex lens has a focal length of 10 cm in air. If it is immersed in a liquid of refractive index 1.5, and the lens$
$A thin prism of angle 6 degrees and refractive index 1.5 is combined with another thin prism of refractive index 1.7 to$
$A concave mirror of focal length 10 cm is placed at a distance of 30 cm from a convex lens of focal length 15 cm. An obj$

View all Ray Optics questions →

An object is placed at a distance of 15 cm from a convex lens of focal length 10… — JEE Main Physics Question with Solution | Solv