Geometrical OpticsHard
Question
Look at the ray diagram show, what will be the focal length of the 1st and the 2nd lens. if the incident light ray passed without any deviation ?
Options
A.- 5 cm and + 10 cm
B.+ 5cm and + 10 cm
C.- 5 cm and + 5 cm
D.+ 5 cm and + 5 cm
Solution
From figure 1st behave as diverging and 2 nd behave as converging
In 1 st incident ray appear to pass at 5 cm distance point and after refraction it becomes parallel to principle axis i.e the focal length f = - 5 cm and for second f = 5 cm
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the an...A thin prism P1 with angle 6o and made from glass of refractive index 1.54 is combined with another thin prism P2 of ref...A person can see clearly only upto a distance of 25 cm. He wants to read a book placed at a distance of 50 cm. What kind...A diverging beam of light from a source S having divergence angle fall symmetrically on a glass slab as shown. The angle...What is the length of the image of the rod in mirror, according to the observe in air ? (refractive index of the liquid ...