Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A thin glass (refractive index 1.5) lens has an optical power of – 5D in air. Its optical power in a liquid medium with refractive index 1.6 will beOption:

A thin glass (refractive index 1.5) lens has an optical power of – 5D in air. Its optical power in a liquid medium with refractive index 1.6 will be

Option: 1

1 D


Option: 2

-1 D


Option: 3

25 D


Option: 4

-25 D


Answers (1)

best_answer

In \ \ air. \\ P=\frac{1}{f}=\left[\frac{\mu_{g}}{\mu_{a}}-1\right]\left[\frac{1}{R_{1}}-\frac{1}{R_{2}}\right]$ \\ In medium\\ $P^{\prime}=\frac{1}{f^{\prime}}=\left[\frac{\mu_{g}}{\mu_{l}}-1\right]\left[\frac{1}{R_{1}}-\frac{1}{R_{2}}\right]

\frac{P^{\prime}}{P}=\frac{\left[\frac{\mu_{g}}{\mu_{l}}-1\right]}{\left[\frac{\mu_{g}}{\mu_{a}}-1\right]}=\frac{\left[\frac{1.5}{1.6}-1\right]}{\left[\frac{1.5}{1}-1\right]}=\frac{(-0.1 / 1.6)}{0.5}

P^{\prime}=1 D

Posted by

seema garhwal

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

CSAB NEUT counselling 2025 registration begins today for BTech admissions in NE states, UTs
anam-khan

BSEB Super 50 coaching application reopens tomorrow for JEE, NEET aspirants
anam-khan

Telangana to offer free JEE, NEET, CLAT coaching to government school students

Latest Question