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If mu is the permeability and in is the ...

If `mu` is the permeability and `in` is the permittivity then `(1)/(sqrt(mu in))` is equal to

A

Speed of sound

B

Speed of light in vaccum

C

Speed of sound in medium

D

Speed of light in medium

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • If M is the magnetic moment, mu is the magnetic permeability and H is the intensity of magnetising field, then the dimensional formula for mu MH is

    A
    `ML^(2)T^(-2)`
    B
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    C
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  • (A) : The index of refraction (n) for majority of substances is related to their relative permittivity (in_(r )) as n=sqrt(in_(r )) . (R) : The relative permeability (mu_(r )) is approximately 1 for majority substances.

    A
    Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.
    B
    Both 'A' and ’R' are true and 'R' is not the correct explanation of 'A
    C
    A' is true and 'R' is false
    D
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  • Let ABC be a triangle with vertices at points A( 2,3,5 ), B ( -1,3,2) and ( lambda , 5, mu ) in three dimensional space. If the median through A is equally inclined with the axes , then (lambda , mu ) is equal to

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    C
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