Geometrical OpticsHard
Question
A thin convex lens of focal length ′f′ is put on a plane mirror as shown in the figure. When an object is kept at a distance ′′a′ from the lens - mirror combination, its image is formed at a distance a/3 in front of the combination. The value of ′′a′ is :
Options
A.3f
B.3/2 f
C.f
D.2f
Solution
Lens :
Mirror : Forms image at equal distance from mirror
lens :
a = 2f
Option(4)
Mirror : Forms image at equal distance from mirror
lens :
a = 2f
Option(4)
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
In a laboratory four convex lenses L1 ,L2 ,L3 ,and L4 of focal lengths 2,4,6 and 8 cm respectively are available. Two of...Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed ...If two mirrors are kept at 60o to each other, then the number of images formed by them is...A person′s near point is 50 cm and his far point is 3 m. Power of the lenses he requires for- (i) reading and (ii)...A ray of light is incident on the hypotenuse of a right-angled prism after travelling parallel to the base inside the pr...