Physics · UNITS AND MEASUREMENT

If Planck's constant (\( h \)), speed of light in vacuum (\( c \)), and Newton's gravitational constant (\( G \)) are taken as fundamental quantities, the dimension of time in terms of \( h \), \( c \), and \( G \) is:

1. A
   \( [h^{1/2} G^{1/2} c^{-5/2}] \)
2. B
   \( [h^{1/2} G^{1/2} c^{-3/2}] \)
3. C
   \( [h^{1/2} G^{-1/2} c^{5/2}] \)
4. D
   \( [h^{-1/2} G^{1/2} c^{3/2}] \)