Physics, asked by uanjaiah, 1 year ago

what is the focal length of double concave lens kept in air with two spherical surfaces of radii R1 equals to 30 cm and R2 = 60 CM take effect 2 index of lens as in equal to 1.5

Answers

Answered by Haribhaskaran

1

Answer:

I don't know

Explanation:

it is because, I didn't understand on calculating double convex

Previous Question

Next Question

Similar questions

Math, 6 months ago

colour 1/2of 8 flowers How many flowers did you colour? in fraction of a collection ...

Biology, 6 months ago

working of skin in 70 to 100...

Physics, 6 months ago

A car travels between two cities in three parts of equal distance with speed 30,45, 90 km/h find the average speed...

Math, 1 year ago

2 of total number of students of a school 5 come by car ellile t of student conce by bus. All the other student walk to school of which I coalk on their own and the rest are escorted by their partnte. Il 224 students come to school walking on their own, how many students studed in that school,...

English, 1 year ago

what is chromatography how can we separate a mixture of salt and ammonium chloride...

Physics, 1 year ago

A ball is dropped from a building and simultaneously another ball is projected upward with the some velocity. Describe the change in relative velocities of the balls as a function of time.

Physics, 1 year ago

A hunter aims a gun at a monkey hanging from a tree some distance away. The monkey drops from the branch at the moment he fires the gun hoping to avoid the bullet. Explain why the monkey made a wrong move.

Math, 1 year ago

If A = (-2, -1, 0, 1, 2) and f : A → B is a surjection defined by f(x) = x² + x + 1 then find B.