Posted by Jon on Tuesday, April 8, 2008 at 3:46am.
1)An object of height 4 cm is placed at a distance of 20 cm from a convex lens of focal length 10 cm. Find the nature of the image.
1/f=1/d1+1/do
d1=fdo/dof
(10)(20)/2010
d1=20
m=(20)(4)/20
4 or 4 away
answer: real, inverted
2)Light passes from air into water at 45.0 d/C to the normal. If the index of refraction of water is 1.33, find the angle of refraction.
sin1((1.00/1.33)sin45.0
32.1 d/C

Physics  drwls, Tuesday, April 8, 2008 at 6:31am
The numbers are correct, but I am not familiar with your "d/C" notation. I hope it has nothing to do with degrees C, which is a unit of temperature, not angle. Anglemeasuring units are just called "degrees".
Answer This Question
Related Questions
 CALCULUS  If you could give an explenation with the answers, that'd be ...
 physics  A box is placed 50 cm away from a double convex lens. The image is on ...
 Science Important  1. A toy of height 18.4 cm is balanced in front of a ...
 science  An object 3 cm is high is placed 24 cm away from a convex lens of ...
 Physics  A thin convex lens produce a real image on an a screen . if an object...
 physics  A convex lens with a focal length of 20 cm is placed in front of a ...
 physics  Because a concave lens cannot form a real image of a real object, it ...
 calculus problem  the thin lens equation in physics is 1/s+1/S=1/f where s is ...
 Physics  A convex lens of focal length 2.5 cm is placed 4 cm from a small ...
 marymount academy  1.An object 2.5cm high is placed 10cm from a converging lens...
More Related Questions