Practice - Light Waves – Our Window to the Universe
Practice Questions
Test your understanding with targeted questions
What is the speed of light in a vacuum?
💡 Hint: Think about how fast light travels in space.
Name one type of lens.
💡 Hint: Consider how they manipulate light.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the speed of light in a vacuum?
💡 Hint: This speed is a universal constant.
True or False: Light can travel through a vacuum.
💡 Hint: Consider the light from the Sun reaching Earth.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A light ray hits a glass slab at an angle of 30 degrees. If the refractive index of glass is 1.5, what is the angle of refraction?
💡 Hint: Don’t forget to convert degrees into radians if necessary, but keep it in degrees for this question.
An optical lens has a focal length of 20 cm. How far must an object be placed from this lens to form a sharp image on a screen situated 30 cm from the lens?
💡 Hint: Consider rearranging the lens formula to isolate the object distance.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.