Geometrical OpticsHard
Question
A student wants to set up an experiment with a thin convex lens of focal length f such that a thin real object produces a focused real image on a movable screen. At how many locations along the optical axis (principal axis) can the object be placed so that the distance between the object and the focused image on the screen is equal to 3f ?
Options
A.There is no location
B.There is exactly one location
C.There are exactly two locations
D.There are exactly four locations
Solution
m =
, u = f + xu =
(f + x)u + v = 3f
f + x +
(f + x) = 3fBy solving above equation we do not get any real value of x.
Create a free account to view solution
View Solution FreeMore Geometrical Optics Questions
The focal length of a convex lens is 10 cm and its refractive index is 1.5. If the radius of curvature of one surface is...White light is passed through a prism of angle 5o If the refractive indices for red and blue colour are 1.641 and 1.659 ...If refractive index of glass is 3/2 and refractive index of water is 4/3 and velocity of light in glass is 2 × 108 ...The exit surface of a prism with refractive index $n$ is coated with a material having refractive index $\frac{n}{2}$. W...Lenses of powers 3D and -5D are combined to from a compound lens. An object is placed at a distance of 50 cm from this l...