Speed of light in vacuum is kms -1 A- 3 - 108B- 3 - 105C- 3 - 106D- 3 - 107

The correct option is B 3 ×10^5We know 1 km = 1000 m Speed of light in vacuum is 3 × 10^8 ms^ 1 = 3× 10^8/1000 = 3× 10^5 kms^ 1 ...

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Standard X

Physics

Characteristics of Light

Speed of ligh...

Question

Speed of light in vacuum is $k m s^{- 1}$

3 \times 10^{8}

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3 \times 10^{5}

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3 \times 10^{6}

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3 \times 10^{7}

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Solution

The correct option is B $3 \times 10^{5}$
We know $1 k m = 1000 m$
Speed of light in vacuum is $3 \times 10^{8} m s^{- 1} = \frac{3 \times 10^{8}}{1000} = 3 \times 10^{5} k m s^{- 1}$

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Speed of light in vacuum is kms−1

The correct option is B 3×105We know 1 km=1000 m Speed of light in vacuum is 3×108 ms−1=3×1081000=3×105 kms−1

Speed of light in vacuum is $k m s^{- 1}$

The correct option is B $3 \times 10^{5}$
We know $1 k m = 1000 m$
Speed of light in vacuum is $3 \times 10^{8} m s^{- 1} = \frac{3 \times 10^{8}}{1000} = 3 \times 10^{5} k m s^{- 1}$