What happens when a glass is immersed in water? Whether it's power of the glass decreases or increases.

Answers (1)

The focal length of a lens is very much affected when immersed in water. The reason is that the angle of refraction is dependent on the relative difference  between the indices of refraction of the incoming medium and the medium of the lens.  To be precise, the formula for the focal length is:  1/flens = (nglass - nincident)*(1/R- 1/R2),  where R1 and R2 are the radii of curvature of the entrance and exit of the lens. So, when a lens is immersed in water then focal length increase and focal length is inversely proportional to the angular magnification that's so the lens immersed in water the power decreases.

Most Viewed Questions

Preparation Products

Knockout JEE Main (Six Month Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Study Improvement Plan.

₹ 9999/- ₹ 8499/-
Buy Now
Knockout JEE Main (Nine Month Subscription)

- AI Coach Study Modules, - Unlimited Mock Tests, - Study Improvement Plan.

₹ 13999/- ₹ 12499/-
Buy Now
Test Series JEE Main 2024

Chapter/Subject/Full Mock Tests for JEE Main, Personalized Performance Report, Weakness Sheet, Complete Answer Key,.

₹ 7999/- ₹ 4999/-
Buy Now
JEE Main Rank Booster 2023

Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, Faculty Support.

₹ 9999/- ₹ 6999/-
Buy Now
JEE Foundation + Knockout JEE Main 2024 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports,.

₹ 3999/-
Buy Now
Boost your Preparation for JEE Main 2021 with Personlized Coaching
 
Exams
Articles
Questions