46. The unit of permittivity of free space, ε0 is :

(a) coulomb/newton-metre

(b) (newton-metre)^{2 }/(coulomb)^{2}

(c) (coulomb)^{2}/(newton-metre)^{2 }

(d) (coulomb)^{2}/(newton-metre)^{2 }

47. The significant figures of the number 6.0023 is :

(a) 2

(b) 5

(c) 4

(d) 1

48. What is the number of significant figures in 0.0310 x 10^{3} ?

(a) 2

(b) 3

(c) 4

(d) 6

49. The number of significant figures in 11.118 x 10^{-6} V is :

(a) 3

(b) 4

(c) 5

(d) 6

50. In which of the following numerical values, all zeros are significant?

(a) 0.2020

(b) 20.2

(c) 2020

(d) None of these

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