Question

Please can someone answer question 5 of this worksheet.I will mark him/her as brainliest

Answer 1

DEAR FRIEND,

Ok first part of the question. You can find the refractive index of medium 2 by using this formula:

(Refractive index of medium 1) × (sine of incident angle in medium 1) = (Refractive index of medium 2) × (sine of refracted angle in medium 2)

=> 1 × sin 45° = n × sin 30°
=> n = √2 = 1.41

Now the second part.

Clearly the new medium 1 is of water, so just put the the value of water's refractive index in the equation:

(4/3) × sin 45° = √2 × sin a
=> sin a = 4/3
=> a = 52°

Clearly the Angle of Refraction has increased.

I HOPE YOU UNDERSTOOD IT MY FRIEND!!!

HAVE A NICE DAY!!