Author Question: A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has a radius of ... (Read 100 times)

urbanoutfitters · **on:** Jul 27, 2018

A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has a radius of curvature of 12. cm for the 1st surface and 24. cm for the 2nd.

(a) What is the focal length of this lens when used in air?
(b) If used under water (n = 1.33), what is the focal length?

Question 2

The energy required to accelerate an interstellar spaceship depends on

A) its mass only
B) its final velocity only
C) the type of fuel it uses
D) its mass and final velocity