Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Two thin lenses are of same focal lengths (f), but one is convex and the other one is concave. When they are placed in contact with each other, the equivalent focal length of the combination will b

Two thin lenses are of same focal lengths (f), but one is convex and the other one is concave. When they are placed in contact with each other, the equivalent focal length of the combination will be:

Option: 1

Zero


Option: 2

f / 4


Option: 3

f / 2


Option: 4

Infinite


Answers (1)

best_answer

\frac{1}{f_{\text {net }}}=\frac{1}{f}-\frac{1}{f} \quad \Rightarrow \quad \frac{1}{f_{\text {net }}}=0 \quad \Rightarrow \quad f_{\text {net }}=\infty

Posted by

SANGALDEEP SINGH

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

CBI arrests Latur coaching centre founder in NEET-UG paper leak case; exam questions found on phone
anam-khan

NEET UG ‘Paper Leak’: CBI conducts searches at Renukai Chemistry Classes in Latur
anam-khan

Abolish NEET, restore state CET; Karnataka urges Centre after paper leak row

Latest Question