The characteristic distance at which quantum gravitational effects are significant, the Planck length, can be determined from a suitable combination of the fundamental physical constants G , h and c .

Question

The characteristic distance at which quantum gravitational effects are significant, the Planck length, can be determined from a suitable combination of the fundamental physical constants $G, h$ and $c$ . Which of the following correctly gives the Planck length?

Options:

Answer:

B

Solution:

Plank length is a unit of length, $l_{p} = 1.616229 \times 1 0^{- 35} m l_{p} = \frac{h G}{c ^{3}}$

TestHub · Accepted Answer

Plank length is a unit of length, ​ l p ​ = 1.616229 × 1 0 − 35 m l p ​ = c 3 h G ​ ​ ​

Physics - Unit & Dimension Question with Solution | TestHub

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