Question

Explain the following terms- a) Reflection of light b) Life cycle of silk moth c) Dispersion and lateral inversion

Answer 1

Light.........

Reflection of light:-

The bouncing back of light after striking the surface is called reflection of light.....

Additional information:-

> When reflection occurs angle(i)= angle (r)

Here,angle(i) means angle of incidence....

angle(r) means angle of reflection.....

And a normal ray lie perpendicular to

them.

All ray lie of the same point...........

Life cycle of silk moth:-

The first stage begins when adult silkworm lay egss then the tiny black caterpillar comes out of the egg when it hatches.The caterpillar feed on mulberry leaves and after some days it forms cocoon and go inside of it( coccon is formed by the silk fibre which we obtain).Inside cocoon caterpillar changes it pupa and then pupa cbanges into adult moth.This process repeats again adult moth of opposite sex mate with each other and give eggs.....

Dispersion:-

The dispersion of light takes place in prism when the white light pass through the prism at an acute angle,the white light dispersed into seven colours (VIBGYOR) .

Extra::::----

If you placed another inverted prism in front of the prism by which white light dispered then all seven colours combine again and form white light.........

lateral Inversion:-

The phenomenon by which the left and right of your changed in front of plane mirror .It means the right hand will show in left of mirror and vice-versa.

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