Light and Optics — MCQ Practice
Interactive MCQ Practice
Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 5 questions available.
In a ray diagram, an incident ray makes 30° with a plane mirror surface. What is its angle of reflection, using the standard optical definition?
A beam has vacuum wavelength 600 nm and enters a stationary transparent medium whose refractive index is 1.5 at that frequency. Which pair describes wavelength and frequency inside it?
A thin converging lens in air has f = +20 cm. With an object at u = −30 cm in the Cartesian convention, which image distance and magnification follow?
Which ideal ray-optics condition permits total internal reflection at a transparent boundary?
A converging thin lens has focal length +25 cm in air. What is its optical power in dioptres?