Question answer
What is the speed of light in vacuum?
What is the refractive index of glass ?
What is the relation between the radius of curvature and the focal length of a mirror ?
Write the sequence of colours in a spectrum ?
How is the refractive index of a medium related to the speed of light in it ?
What will happen to a ray of light incident through the centre of curvature of a spehrical mirror ?
Why is concave mirror called a converging mirror? Explain in short with diagram ?
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Answer:
speed of light in vacuum is 3lakh kilometres pr hours
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Answer:
1- 299792458 meters per second
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