Question

Jasleen came to know that the speed of light is maximum in vaccum what is the speed of light in vaccum in m/s?​

Answer 1

Answer:

The speed of light in vacuum is C _____

Light travels at approximately 300,000 kilometres per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometres per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometres per second in glass.

Explanation:

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Answer 2

Velocity of light in vacuum is 3 × 10⁸ m/s.

Detailed Discussion:

• This means that in vacuum, light travels 3 × 10⁸ metres in 1 second.

• Now, when light travels at this speed for 1 year, the distance covered by light is called a LIGHT YEAR.

• Value of 1 light year is approximately 9.46 trillion kilometres or 5.87 trillion miles.

• Now, when light passes through denser media like glass or water, it's velocity decreases.

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