Light and Human Eye

Here are some MCQs on Light and Human Eye 1. What is the speed of light in a vacuum? a) 300,000 km/s b) 300,000 m/s c) 300,000,000 m/s d) 3,000,000,000 m/s 2. Which of the following is not a type of electromagnetic radiation? a) Radio waves b) X-rays c) Sound waves d) Gamma rays 3. … Read more