If M is mass of a planet and R is its radius then in order to become black hole [c is speed of light]

\sqrt{\frac{G M}{R}} \leq c

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\sqrt{\frac{G M}{2 R}} \geq c

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\sqrt{\frac{2 G M}{R}} \geq c

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\sqrt{\frac{2 G M}{R}} \leq c

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Solution

The correct option is C $\sqrt{\frac{2 G M}{R}} \geq c$
According to Einstein
$V e \geq C$
$\sqrt{\frac{2 G M}{R}} \geq C$

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If M is mass of a planet and R is its radius then in order to become black hole [c is speed of light]

The correct option is C √2GMR≥cAccording to Einstein Ve≥C√2GMR≥C

The correct option is C $\sqrt{\frac{2 G M}{R}} \geq c$
According to Einstein
$V e \geq C$
$\sqrt{\frac{2 G M}{R}} \geq C$