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Classification Based on Appearance

Question 9 Ob...

Question

Question 9

Observe the picture given in Fig. A sheet of some material is placed at position ‘P’, still, the patch of light is obtained on the screen. What is the type of material of this sheet?

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Solution

Inorder to see the patch of light on the screen, a transparent material has to be placed at point P. Transparent materials are objects which allows light to pass through them completely. Glass and plastic are examples of transparent objects.

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Similar questions

Q. Observe the picture given in the figure. Even when a sheet of some material is placed at position ‘P’, still the patch of light is obtained on the screen. What is the type of material of this sheet?

Question 1

Observe the picture given in Fig. carefully.

A patch of light is obtained at B, when the torch is lighted as shown. Which of the following is kept at position A to get this patch of light?

(a) A wooden board

(b) A glass sheet

(c) A mirror

(d) A sheet of white paper

Q. Observe the picture given in Fig. carefully.
A patch of light is obtained at

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, when the torch is lighted as shown. Which of the following is kept at position

A

to get this patch of light?

Question 14.3

Observe the picture given in Fig. carefully and answer
the following questions.

Can you comment on air quality of the place shown in
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Q. A screen is at a distance

D = 80 cm

from a diaphragm having two narrow slits

S_{1}

S_{2}

d = 2 mm

S_{1}

is covered by a transparent sheet of thickness

t_{1} = 2.5 μ m

S_{2}

is covered by another sheet of thickness

t_{2} = 1.25 μ m

as shown in figure

Both sheets are made of same material having refractive index

μ = 1.40

. Water is filled in the space between diaphragm and screen. A monochromatic light beam of wavelength

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(μ_{w} = \frac{4}{3})

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Classification Based on Appearance

Standard VI Chemistry

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