Gravitation

Assertion : Gravitational potential and gravitational potentail energy, both are related to the work done by gravitational force in the gravitational field Reason : Gravitational field strength is related to the gravitaional force in gravitational field.

ग्रहों की गति संबंधी केप्लर के नियम (Kepler's Law of Planetary Motion)|Questions|गुरुत्वीय क्षेत्र (Gravitational Field)|गुरुत्वीय क्षेत्र की तीव्रता (Intensity of Gravitational Field)|गुरुत्वीय क्षेत्र की तीव्रता के लिए व्यंजक (Expression for the intensity of the gravitational field)|गुरुत्वीय क्षेत्र की तीव्रता और गुरुत्वीय त्वरण में संबंध (Relation between gravitational field intensity and gravitational acceleration)|गुरुत्वीय विभव (Gravitational Potential)|गुरुत्वीय स्थितिज ऊर्जा (Gravitational Potential Energy)|OMR

Choose the correct alternative : (a) If the gravitational potential energy of two mass points infinite distance away is taken to be zero, the gravitational potential energy of a galaxy is (positive /negative/zero). (b) The universe on the large is shaped by (gravitational/electromagentic) forces, on the atomic scale by (gravitational/electromagnetic) forces, on the nuclear scale by (gravitational/electromagnetic/strongnuclear) forces.