Medium General Science GENERAL SCIENCE FPSC Question The speed of light in vacuum is about A 300 Million meters per second B 300 Million meters per hour C 300,000 kilometers per second D 300 Million kilometers per hour Submit Answer Try Again Show Explanation Explanation Explanation Light travels at about 300,000 kilometers per second i n a vacuum with a refractive index of 1.0, but slows down to 225,000 kilometers per second in water and 200,000 kilometers per second in the glass. ND16-3-2023 Previous MCQ All MCQs Next MCQ More MCQs in General Science Medium A magnet that is hard to magnetize is called a(n)? A magnet that is hard to magnetize is called a(n)? Medium Birds exhibits which of the following traits? Birds exhibits which of the following traits? Medium Which of the following is/are the characteristics of reptiles? Which of the following is/are the characteristics of reptiles? Medium Which of the following is/are characteristics of amphibians? Which of the following is/are characteristics of amphibians?