If the angle of incidence is 70° in a medium with a refractive index of 1.5, what is the angle of refraction in air?
Practice Questions
1 question
Q1
If the angle of incidence is 70° in a medium with a refractive index of 1.5, what is the angle of refraction in air?
30°
20°
10°
Total internal reflection occurs
Since the angle of incidence (70°) is greater than the critical angle (approximately 41.8° for glass to air), total internal reflection occurs.
Questions & Step-by-step Solutions
1 item
Q
Q: If the angle of incidence is 70° in a medium with a refractive index of 1.5, what is the angle of refraction in air?
Solution: Since the angle of incidence (70°) is greater than the critical angle (approximately 41.8° for glass to air), total internal reflection occurs.
Steps: 7
Step 1: Identify the angle of incidence, which is given as 70°.
Step 2: Understand that the refractive index of the medium (1.5) indicates it is likely glass or a similar material.
Step 3: Calculate the critical angle using the formula: critical angle = arcsin(1/n), where n is the refractive index (1.5).
