Question

what is the sped of light in vaccum???​

Answer 1

Answer:

The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is defined as 299792458 metres per second (approximately 300000 km/s). It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second.

Explanation:

MARK IT BRAINLIEST..

Answer 2

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The speed of light in vaccum is $\sf{3×10^8 m/s}$

EXPLORE MORE-:

A vacuum is a volume that encloses little or no matter. In other words, it is a region that has a gaseous pressure much lower than that of atmospheric pressure.

Intensity is the amount of energy a sound wave has per unit of time. Intensity is measured in decibels, represented by dB. Softest sound: 0 dB. Harmful to hearing ≥ 85 dB.

Intensity of sounds

Whisper- 20 dB

Rainfall- 50 dB

Talking normally - 60 dB

Busy city traffic -80 dB

Cheer of crowd at sporting event -90 dB

Headphones at high volume -105 dB

Rock concert - 120 dB