Geometrical OpticsHard
Question
A spherical surface of radius of curvature R, separate air (refrective index 1.0) from the glass (refrective index 1.5). The centre of curvature is in the glass. A point object P placed in air is found to have a real image Q in the glass . The line PQ cuts the the surface at a point O and PO = OQ. The distance PQ is equal to
Options
A.5 R
B.3 R
C.2 R
D.1.5 R
Solution
Let us say PO = OQ = X
Applying
Substituting the values with sing
(Distance are measured from O and are taken positive in the direction of ray of light)
∴
∴ X = 5R
Applying
Substituting the values with sing
(Distance are measured from O and are taken positive in the direction of ray of light)
∴
∴ X = 5RCreate a free account to view solution
View Solution FreeMore Geometrical Optics Questions
The angle of prism is 5o and its refractive indices for red and violet colours are 1.5 and 1.6 respectively. The angular...Look at the ray diagram show, what will be the focal length of the 1st and the 2nd lens. if the incident light ray passe...The plane faces of two identical plano-convex lenses each having focal length of 40 cms are pressed against each other t...A biconvex lens of focal length 15 cm is in front of a plane mirror. The distance between the lens and the mirror is 10 ...A plano convex lens fits exactly into a plano concave lens. Their plane surfaces are parallel to each other. If lenses a...