Question
A fish inside water (μ = 4/3) sees the world above
through a circular “window” due to total internal reflection. The angular diameter of this window is approximately:Solution
Given:
- The fish is in water with refractive index μ = 4/3
- The fish looks up at the air-water interface
- μ₁ = 4/3 (water)
- μ₂ = 1 (air)
- θ₁ = θc (critical angle in water)
- θ₂ = 90° (refracted angle in air)
More Physics GS Questions
Which of the following statements is/are correct?
1. Amnion contains fluid.
2. Ultrasound scan can detect the sex of an embryo.
Sel...
A day is considered a rainy day when it receives a rainfall of:
Which of the following is the correct term used to describe Graphite, Carbon and Diamonds?
Food cans are coated with tin and NOT zinc because ________.
Which of the following is not an equation of motion?
What is the life span of RBC?
___________ is an important mineral nutrient
When diamond is heated at more than 1500 Degree Celsius in the absence of air, then it turns to………….?
Which type of glass is used for making chemical apparatus like beakers, flasks etc.?
Which of the following are examples of macro minerals?