Planck’s constant h, speed of light c and gravitational constant G are use to form a unit of length L and a unit of mass M. Then the correct options is Planck's constant h speed of light c and gravitational constant G are use to form a unit of length L and a unit of mass M. Then the correct options is September 16, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related