Q135 / 180 · AIIMS 2008 · Physics

A converging lens forms a real image $I$ of an object on its principal axis. A rectangular slab of refractive index $\mu$ and thickness $x$ is introduced between $I$ and the lens, $I$ will move

A
towards the lens $(\mu-1) x$
B
towards the lens by $\left(1-\frac{1}{\mu}\right) x$
C
away from the lens by $(\mu-1) x$
Correct answer
D
away from the lens by $\left(1-\frac{1}{\mu}\right) x$.

Solution

Due to insertion of slab, the optical path increases by $x / \mu$, where $x$ is thickness of slab. Therefore the converging point will shift away by $\left[x-\frac{x}{\mu}\right]=x\left(1-\frac{1}{\mu}\right)$.

Hence, the correct answer is option: 'D'.

Relevant Questions

A fish in water (refractive index ) looks at a bird vertically above in the air. If is the height of the bird and is the depth of the fish f25 May, 2019Refraction of light from plane surface
A transparent cube of edge contains a small air bubble. Its apparent depth when viewed through one face is and when viewed through opposite 2016Refraction of light from plane surface
The frequency of a light wave in a material is and wavelength is . The refractive index of material will be2013Refraction of light from plane surface
Assertion : The sun rises some time before the actual sun-rise. Reason : Because of the refraction through the different layers of atmospher2013Refraction of light from plane surface
In refraction, light waves are bent on passing from one medium to the second medium, because in the second medium2006Refraction of light from plane surface
The apparent depth of water in cylindrical water tank of diameter is reducing at the rate of minute when water is being drained out at a con2005Refraction of light from plane surface

A converging lens forms a real image \(I\) of an object on its principal axis. A rectangular slab of refractive index \(\mu\) and thickness \(x\) is introduced between \(I\) and the lens, \(I\) will move

Solution

Relevant Questions