Assertion : If the product of surface area and density us is same for two planets, escape velocities will be same for both. Reason : Product of surface area and density is proportional to the mass of the planet per unit radius the planet. Assertion : If the product of surface area and density us is same for two planets escape velocities will be same for both. Reason : Product of surface area and density is proportional to the mass of the planet per unit radius the planet. September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 10 - Gravitation , Volume 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related