Sarthaks APP
+7 votes
in Physics by (7.5k points)
edited by

A beam of width t is incident at 45 degrees on an air-water boundary. Find the width of the beam in water.

1 Answer

+8 votes
by (9.9k points)
selected by
Best answer

Hint: Apply Snell's Law and Refractive index formula to get the answer

Snell's Law describes the relationship between the angles of the two light waves and the indices of refraction of the two materials as:

n1 x sin(q1) = n2 x sin(q2)

Refractive Index (n) = D(measured)/D(apparent)

where D(measured) is the measured depth (from the surface of the liquid to the position of the mark on the empty cell) using the microscope, and D(apparent) is the mark measurement with and without liquid.

by (7.5k points)
I did just like that but the answer didn't match
by (9.9k points)
@Rahul, I have updated the answer.
by (35 points)
Please can u explain it again step by step
by (10 points)
Explain it in step by step

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.