Multiple choice general knowledge science & technology

What is the Speed of light?

  1. 300,000 Mt/Sec

  2. 30000 Km/Sec

  3. 300,000 Km/Sec

  4. None of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

To solve this question, the user needs to know the definition of the speed of light.

The speed of light is defined as the distance light travels in a vacuum per unit of time.

Now, let's go through each option and explain why it is right or wrong:

A. 300,000 Mt/Sec: This option is incorrect because "Mt" is not a standard unit of measurement for speed. Also, the correct value of the speed of light is 299,792.458 km/s, which is not equal to 300,000 Mt/Sec.

B. 30000 Km/Sec: This option is incorrect because the actual value of the speed of light is much greater than 30,000 km/s. The correct value is around 299,792.458 km/s.

C. 300,000 Km/Sec: This option is correct. The speed of light in a vacuum is approximately 299,792.458 km/s, which is rounded up to 300,000 km/s for convenience.

D. None of the above: This option is incorrect because Option C is the correct answer.

Therefore, the Answer is: C. 300,000 Km/Sec

AI explanation

The speed of light in a vacuum is approximately 300,000 kilometers per second (more precisely 299,792 km/s), a fundamental physical constant. The other options are off by orders of magnitude or unit errors (mixing up meters and kilometers).

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