My Learning Cart
?
Categories
Account

A light ray strikes a glass surface at an angle of 45 degrees. If the refractive

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

What’s inside this PDF?

Question: A light ray strikes a glass surface at an angle of 45 degrees. If the refractive index of glass is 1.5, what is the angle of refraction?

Options:

  1. 30 degrees
  2. 45 degrees
  3. 60 degrees
  4. 90 degrees

Correct Answer: 30 degrees

Solution: 

Using Snell\'s law, sin(r) = (n1/n2) * sin(i) = (1/1.5) * sin(45) = 0.471, giving r ≈ 30 degrees.

A light ray strikes a glass surface at an angle of 45 degrees. If the refractive

Practice Questions

Q1
A light ray strikes a glass surface at an angle of 45 degrees. If the refractive index of glass is 1.5, what is the angle of refraction?
  1. 30 degrees
  2. 45 degrees
  3. 60 degrees
  4. 90 degrees

Questions & Step-by-Step Solutions

A light ray strikes a glass surface at an angle of 45 degrees. If the refractive index of glass is 1.5, what is the angle of refraction?
  • Step 1: Identify the angle of incidence (i). In this case, the angle of incidence is 45 degrees.
  • Step 2: Identify the refractive index of the first medium (air). The refractive index of air is approximately 1, so n1 = 1.
  • Step 3: Identify the refractive index of the second medium (glass). The refractive index of glass is given as 1.5, so n2 = 1.5.
  • Step 4: Use Snell's law, which states that n1 * sin(i) = n2 * sin(r). We need to find the angle of refraction (r).
  • Step 5: Rearrange Snell's law to find sin(r): sin(r) = (n1/n2) * sin(i).
  • Step 6: Substitute the values into the equation: sin(r) = (1/1.5) * sin(45 degrees).
  • Step 7: Calculate sin(45 degrees). The value of sin(45 degrees) is approximately 0.707.
  • Step 8: Now calculate sin(r): sin(r) = (1/1.5) * 0.707 = 0.471.
  • Step 9: To find the angle of refraction (r), use the inverse sine function: r = sin^(-1)(0.471).
  • Step 10: Calculate r, which is approximately 30 degrees.
  • Refraction – The bending of light as it passes from one medium to another, described by Snell's law.
  • Snell's Law – A formula used to calculate the angle of refraction when light passes between two different media, given by n1 * sin(i) = n2 * sin(r).
  • 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