Register
Two lenses with focal lengths 10cm and 20cm and made of same material are placed coaxially separated by distance d. The value of d such that the system is achromatic is A) 20 om ) 30cm C) 10 cm D) 15 cm
168k views
2 votes
Two lenses with focal lengths 10cm and 20cm and made of same material are placed coaxially

separated by distance d. The value of d such that the system is achromatic is
A) 20 om
) 30cm
C) 10 cm
D) 15 cm​

User Ira Cooke
by
5.1k points

1 Answer

2 votes
if I’m not mistaken the answer is 30 cm
User Ignorant
by
4.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

4.6m questions

6.0m answers

Other Questions

How long does it take to cover 5 metre when going at the speed of 1 km/h
What is the difference between mass and density?
How long is a day/night cycle on the moon?
What are three ways in which heat is transferred
On Mars a rock falls an unknown vertical distance from a resting position and lands in a crater. If it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? Mars' surface gravity
Link Copied!