JEE Main · PhysicsMedium
A point object is placed at a distance of $u = -30 \text{ cm}$ from a convex lens of focal length $f = 20 \text{ cm}$. A convex mirror of radius of curvature $R = 20 \text{ cm}$ is placed $50 \text{ cm}$ behind the lens. Find the position of the final image formed by this system.
- A.At the pole of the mirror
- B.At 10 cm from the mirror
- C.At 20 cm from the mirror
- D.At infinity
Show correct answer & step-by-step solution
Correct answer: A — At the pole of the mirror
Solution
Using , we get from the lens. Since the mirror is away, the image is behind the mirror, which is its center of curvature.
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 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
- A ray of light enters a glass slab of thickness 10 cm and refractive index 1.5 at an angle of 45 degrees. Calculate the