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The speed of light in vacuum is equal to...

The speed of light in vacuum is equal to

A

`mu_(0)epsilon_(0)`

B

`mu_(0)^(2)epsilon_(0)^(2)`

C

`sqrt(mu_(0)epsilon_(0))`

D

`(1)/(mu_(0)epsilon_(0))`

Text Solution

Verified by Experts

The correct Answer is:
C
The speed of light in the vaccum is given by the formula
where `mu_(0)` = permeability of vaccume or air
`epsilon_(0)` = permitivity of air
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Knowledge Check

  • The ratio of the speed of the electrons in the ground state of hydrogen to the speed of light in vacuum is

    A
    `1/2`
    B
    `2/137`
    C
    `1/137`
    D
    `1/237`

  • A light ray of 5895 overset(@)(A) wavelength travelling in vacuum enters a medium of refractive index 1.5. The speed of light in the medium is :

    A
    `3 times 10^(8)m//s`
    B
    `2 times 10^(8)m//s`
    C
    `1.5 times 10^(8)m//s`
    D
    `6 times 10^(8)m//s`

  • Refractive index of a medium is mu . Its thickness is t. Velocity of light in vacuum is e. In what time does light travel through the medium?

    A
    `c//mu t`
    B
    `mu//c t`
    C
    `mt// c`
    D
    `c t//mu`

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