The velocity of light emitted by a source S observed by an observer O, who is at rest with respect to S is c. If the observer moves towards S with velocity v, the velocity of light as observed will be [NCERT 1980]

\[\sqrt{1-\frac{{{v}^{2}}}{{{c}^{2}}}}\]

\[\overrightarrow{E}\times \overrightarrow{B}\]

\[\sqrt{1-\frac{{{v}^{2}}}{{{c}^{2}}}}\]

The velocity of light emitted by a source S observed by an observer O,

1.	The velocity of light emitted by a source S observed by an observer O, who is at rest with respect to S is c. If the observer moves towards S with velocity v, the velocity of light as observed will be [NCERT 1980]
A.	c + v
B.	\[c-v\]
C.	\[\overrightarrow{E}\times \overrightarrow{B}\]
D.	\[\sqrt{1-\frac{{{v}^{2}}}{{{c}^{2}}}}\]
Answer» D. \[\sqrt{1-\frac{{{v}^{2}}}{{{c}^{2}}}}\]

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The velocity of light emitted by a source S observed by an observer O, who is at rest with respect to S is c. If the observer moves towards S with velocity v, the velocity of light as observed will be [NCERT 1980]

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