Class 10 Exam > Class 10 Questions > Speed of light in vacuum is:a)3 x 108m...
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Speed of light in vacuum is:
- a)3 x 108 m/s
- b)3 x 109 m/s
- c)2 x 109 m/s
- d)2 x 1011 m/s
Correct answer is option 'A'. Can you explain this answer?
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Speed of light in vacuum is:a)3 x 108m/sb)3 x 109m/sc)2 x 109m/...
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. It's exact value is defined as 299 792 458 metres per second ( or approximately, 3*108 m/s)
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Speed of light in vacuum is:a)3 x 108m/sb)3 x 109m/sc)2 x 109m/...
Visible light consists of weightless particles known as photons. It is one of the classification (spectrum classification) of Electromagnetic waves, all electromagnetic waves travel in vaccum with same velocity that 3 ×10^8 m/s . Electromagnetic waves do not require medium for their propagation, they consists of changing electric and magnetic field. Eg An oscillating charge particle.
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Speed of light in vacuum is:a)3 x 108m/sb)3 x 109m/sc)2 x 109m/...
Speed of Light in Vacuum
Definition:
- The speed of light in a vacuum is a fundamental constant with a value of approximately 3 x 10^8 meters per second (m/s).
Explanation:
- Light travels in the form of electromagnetic waves, and its speed in a vacuum is constant.
- This speed is denoted by the symbol "c" and is considered the fastest speed possible in the universe.
- The speed of light in a vacuum is so significant that it plays a crucial role in various aspects of physics and astronomy.
Significance:
- The speed of light in a vacuum is used as a constant in many equations and theories in physics.
- It serves as a fundamental limit for the transfer of information and energy in the universe.
- The constancy of the speed of light in a vacuum is a key principle in Einstein's theory of relativity.
Formula:
- The speed of light in a vacuum is often represented by the equation c = 1 / √(ε₀μ₀), where ε₀ and μ₀ are the vacuum permittivity and permeability, respectively.
In conclusion, the speed of light in a vacuum is a crucial constant in physics, with a value of approximately 3 x 10^8 m/s. It serves as a fundamental limit in the universe and plays a significant role in various scientific disciplines.
Definition:
- The speed of light in a vacuum is a fundamental constant with a value of approximately 3 x 10^8 meters per second (m/s).
Explanation:
- Light travels in the form of electromagnetic waves, and its speed in a vacuum is constant.
- This speed is denoted by the symbol "c" and is considered the fastest speed possible in the universe.
- The speed of light in a vacuum is so significant that it plays a crucial role in various aspects of physics and astronomy.
Significance:
- The speed of light in a vacuum is used as a constant in many equations and theories in physics.
- It serves as a fundamental limit for the transfer of information and energy in the universe.
- The constancy of the speed of light in a vacuum is a key principle in Einstein's theory of relativity.
Formula:
- The speed of light in a vacuum is often represented by the equation c = 1 / √(ε₀μ₀), where ε₀ and μ₀ are the vacuum permittivity and permeability, respectively.
In conclusion, the speed of light in a vacuum is a crucial constant in physics, with a value of approximately 3 x 10^8 m/s. It serves as a fundamental limit in the universe and plays a significant role in various scientific disciplines.
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Speed of light in vacuum is:a)3 x 108m/sb)3 x 109m/sc)2 x 109m/sd)2 x 1011m/sCorrect answer is option 'A'. Can you explain this answer?
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