Question

•☺ ☺ ĐEFĮNĘ THĘ FØŁŁØWĮNG: ☺ ☺ •
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☺ •(1.)• Spectrum ☺
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☺ •(2)• Multiple reflection ☺
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☺ •(3)• Øptic nerve ☺
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Answer 1

A spectrum (plural spectra or spectrums)[1] is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum. 

When light reflects off a mirror, one image appears. Two mirrors placed exactly face to face give the appearance of an infinite number of images along a straight line. The multiple images seen between two mirrors that sit at an angle to each other lie over a circle.

each of the second pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye.

Answer 2

☺ HERE IS YOUR ANSWER ☺

✔ ✔SPECTRUM :-

☆ It is defined as the characteristics wavelength of radiation ( or a portion there of ) that is emitted or absorbed by an object or substance, atom or molecules.

☆ e.g:- Rainbow, the emission colour from the sun etc.

✔✔MULTIPLE REFLECTION :-

☆ When two mirror are kept with same angle between them due to formation of image, many images are formed this phenomenon is known as multiple reflection.

✔✔ OPTIC NERVE :-

☆ The optic nerve is located in the back of the eye. It is also called the "second cranial nerve "or "cranial nerve ll". It is the 2nd several pairs of cranial nerves. The job of the optic nerve is to transfer visual information from the retina to the vision centre of the brain via electrical impulse.

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