Question

An ink spot is on the sheet of a
paper. A slab of glass of thickness
60 cm and 1.5 refractive index is
placed on the spot. The shifting of
image of the spot will be
​

Answer 1

Answer:

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Answer 2

The image of the spot is shifted to a distance of about 20 cm

Explanation:

Thickness of the glass slab (x) = 60 cm

Refractive Index (μ) = 1.5

Find the shifting of the image of the spot (h).

From the image attached,

$\text{y} = \frac{\text{x}}{\mu}$

$\text{y} = \frac{60}{1.5}$

y = 40 cm

The shifting of the image of the spot (h) can be find by subtract the value of 'y' from the thickness of the slab of glass.

The shifting of the image of the spot (h) = Thickness of the slab of glass (x) - y

h = x - y

h = 60 -40

h = 20 cm

Therefore the shifting of image of the spot is about 20 cm when the refractive index is 1.5 and thickness of the slab of the glass is 60 cm.

To Learn More

1)A small pin fixed on a table top is viewed from above from a distance of 50 cm. By What distance would the pin appear to be raised , if it be viewed from the same point through a 15 cm thick glass slab held parallel to the table ? μ of glass is 1.5 . Does the answer depended on location of the slab ?

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2) If one of two identical slits producing interference in young's double slit experiment is covered with glass, so that the light intensity passing through it is reduced to 50%, find the ratio of the maximum and minimum intensity of the fringe in the interference pattern.

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