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?

The characteristic distance at which quantum gravitational effects are

1.	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?
Answer» `Gh^(2)C^(3)` `G^(2)hc` `G^((1)/(2))hc` `((Gh)/(c^(3)))^((1)/(2))` Answer :D