Physics And Measurement Question 223

Question: The speed of light in vacuum, c, depends on two fundamental constants, the permeability of free space, μ0 d me permittivity of free space, ε0. The speed of light is given by c=1μ0ε0 . The units of ε0 are N1C2m2 . The units for μ0 are

Options:

A) kg1m1C2

B) kgmC2

C) kgms4C2

D) kg1s3C2

Show Answer

Answer:

Correct Answer: B

Solution:

[b] We have, c=1μ00μ0=10c2

units of μ0=1unitsof0c2

=1N1C2m2(ms1)2=Ns2C2

=(kgms2)s2C2=kgmC2



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