Question

answer this. explain it.

Answer 1

Hii friend,

Here is your answer......

The correct answer is option (c) .

explanation:-

The incident angle is 60°

The angle is reflection is reducting 15° per medium and at last the angle of reflection at the medium 3 is 15°.

Then by using Snell's law,

Mu =>sin i /sin r

I=60°. r =15°

Then by applying,

mu => √3.

Hope this helps you a little!!!

Answer 2

hey the above final answer is correct but the assertion is not.
here is how to proceed.
first let the relative RI of 1 and 2 medium be
¶1
therefore ¶1 = sin i / sin r = sin 60 / sin 45=
$( \sqrt{3} \div 2) \div 1 \div \sqrt{2}$
...............(I)
now let ¶2 be the relative RI of 2 and 3 medium
therefore ¶2 = sin i/ sin r= sin 45/sin30 =
$(1 \div \sqrt{2} ) \div (1 \div 2)$
---------(2)
by dividing eqn 1 by 2
we get
$( \sqrt{3} \div \sqrt{2} ) \div ( \sqrt{2} \div 1)$
but if we invert eqn 2nd we get med. 3 /med.2
= 1/√2
therefore finally med. 1/med. 3=
$(\sqrt{3 } \div \sqrt{2} ) \div (1 \div \sqrt{2} )$
= √3/1= √3

hope you are satisfied.
mark brainlist if you find this helpful.