My Learning Cart
?
Categories
Account

A ray of light passes from air into water. If the angle of incidence is 30 degre

₹0.0
Login to Download
  • 📥 Instant PDF Download
  • ♾ Lifetime Access
  • 🛡 Secure & Original Content

What’s inside this PDF?

Question: A ray of light passes from air into water. If the angle of incidence is 30 degrees, what is the angle of refraction in water? (Refractive index of water = 1.33)

Options:

  1. 22.1 degrees
  2. 30 degrees
  3. 36.9 degrees
  4. 45 degrees

Correct Answer: 22.1 degrees

Solution: 

Using Snell\'s law, n1*sin(θ1) = n2*sin(θ2), we find θ2 = 22.1 degrees.

A ray of light passes from air into water. If the angle of incidence is 30 degre

Practice Questions

Q1
A ray of light passes from air into water. If the angle of incidence is 30 degrees, what is the angle of refraction in water? (Refractive index of water = 1.33)
  1. 22.1 degrees
  2. 30 degrees
  3. 36.9 degrees
  4. 45 degrees

Questions & Step-by-Step Solutions

A ray of light passes from air into water. If the angle of incidence is 30 degrees, what is the angle of refraction in water? (Refractive index of water = 1.33)
  • Step 1: Identify the refractive indices. The refractive index of air (n1) is approximately 1.0, and the refractive index of water (n2) is 1.33.
  • Step 2: Identify the angle of incidence (θ1), which is given as 30 degrees.
  • Step 3: Write down Snell's law formula: n1 * sin(θ1) = n2 * sin(θ2).
  • Step 4: Substitute the known values into the formula: 1.0 * sin(30 degrees) = 1.33 * sin(θ2).
  • Step 5: Calculate sin(30 degrees), which is 0.5. So the equation becomes: 1.0 * 0.5 = 1.33 * sin(θ2).
  • Step 6: Simplify the equation: 0.5 = 1.33 * sin(θ2).
  • Step 7: Solve for sin(θ2) by dividing both sides by 1.33: sin(θ2) = 0.5 / 1.33.
  • Step 8: Calculate sin(θ2): sin(θ2) ≈ 0.3759.
  • Step 9: Find θ2 by taking the inverse sine (arcsin) of 0.3759: θ2 ≈ 22.1 degrees.
  • Refraction – The bending of light as it passes from one medium to another due to a change in speed.
  • Snell's Law – A formula used to describe the relationship between the angles of incidence and refraction when light passes between two different media.
  • Refractive Index – A dimensionless number that describes how fast light travels in a medium compared to vacuum.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely
Home Practice Performance eBooks