Question

What is the speed of light in a Medium whose Refractive INDEX is 4÷3 or 4. ----- 3. if the speed of light is 3×10⁸ m S-¹ ​

Answer 1

Answer:

..Answer...

SPEED OF LIGHT IN THE AIR= 3×10⁸ M S-¹

REFRACTIVE INDEX OF THE MEDIUM ... =

$mu = 4 \div 3$

AND SNELL'S LAW CAN BE DEFINED IT AS..

ReFractive index= speed of light in the vacuum

______________________

speed of light in a Medium

So,

$mu = refractive \: index \:$

$mu = speed \: of \: the \: light \: in \: the \: air \div speed \: of \: the \: light \: in \: the \: medium$

So, MU = 3×10⁸S-¹ By 4

------

3

$after \: calculating \: we \: will \: get \: the \: answer \: as$

..

SO THE ANSWER WILL BE

3×10⁸M S-¹ = 2.25× 10⁸ M S-¹

4

3

...SO THE ANSWER WILL BE

=2.25×10⁸ M S-¹..

™•°• THE SPEED OF LIGHT IN THE MEDIUM IS =2.25×10⁸ M S-¹.

Answer 2

ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ sɴᴇʟʟ's ʟᴀᴡ: sɪɴ ʀsɪɴ ɪ=ɴ1ɴ2=ᴠ2ᴠ1 ᴀɴᴅ ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx ғᴏʀ ᴀɪʀ ɪs ≈1

sᴜʙsᴛɪᴛᴜᴛɪɴɢ, 11.5=ᴠ23×108

ᴛʜᴇʀᴇғᴏʀᴇ, ᴠ2=1.53×108=2×108 ᴍ/s