A convex lens of glass (n=1.5) has focal length 0.2 m. The lens is immersed in water of refract

step 1 Okay, in this question we are asked that a convex length of glass of refractive index 1 .5 has f

A convex lens of glass (n=1.5) has focal length 0.2 m. The...

A convex lens of glass $(\mathrm{n}=1.5)$ has focal length $0.2 \mathrm{~m}$. The lens is immersed in water of refractive index $1.33$. The change in the power of convex lens is
(A) $3.72 \mathrm{D}$
(B) $4.62 \mathrm{D}$
(C) $6.44 \mathrm{D}$
(D) $1.86 \mathrm{D}$

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Effect of Immersion on Lens Properties

Immersing a lens in a medium other than air changes the effective contrast in refractive indices between the lens and its surroundings. This alteration affects the lens's focal length and optical power, which is essential for understanding and predicting how a lens behaves in different environmental conditions.

Refractive Index

The refractive index is a measure of how much a material slows down light relative to its speed in a vacuum. It is a fundamental optical property that affects how light bends or changes direction when it enters a new medium.

Lensmaker's Formula

The Lensmaker's formula relates the focal length of a lens to the refractive indices of the lens material and the surrounding medium, along with the curvature radii of the lens surfaces. This formula is crucial for calculating how designing parameters influence a lens's focusing ability.

Optical Power

Optical power is the reciprocal of a lens's focal length, typically expressed in diopters. It quantifies the lens’s ability to converge or diverge light and is a key parameter in lens design and corrective optics.

Transcript

Please give Ace some feedback