The velocities of light in air and glass are 3.0 x 108ms-1 and 2.0 x 108ms-1 respectively. If the angle of refraction is 30°, the sine of the angle of incid...
Question 1 Report
The velocities of light in air and glass are 3.0 x 108ms-1 and 2.0 x 108ms-1 respectively. If the angle of refraction is 30°, the sine of the angle of incidence is
Answer Details
The sine of the angle of incidence can be found by applying Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the velocities of light in the two media.
So, we have:
sin(angle of incidence) / sin(30°) = velocity of light in air / velocity of light in glass
Substituting the given values, we get:
sin(angle of incidence) / 0.5 = (3.0 x 10^8 m/s) / (2.0 x 10^8 m/s)
Solving for sin(angle of incidence), we get:
sin(angle of incidence) = 0.5 x (3.0 / 2.0) = 0.75
Therefore, the sine of the angle of incidence is 0.75.
So, the answer is 0.75.
Download The App On Google Playstore
Everything you need to excel in your exams
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning