CBSE Class XI PHYSICS Revision NotesCHAPTER 8GRAVITATION Kepler’s laws, Universal law of gravitation Acceleration due to gravity Gravitational potential energy Escape Velocity, Orbital Velocity, Geostationary and polar satellites Kepler’s law of planetry motion (a) Kepler’s first law (law of orbit): Every planet…Read More »
CBSE Class 11 Physics NCERT SolutionChapter 8Gravitation 1. Answer the following: (a) You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it…Read More »
CBSE Test Paper 01 Chapter 8 Gravitation The direction of the universal gravitational force between particles of masses m1m1 and m2m2 is: 1 towards m1m1 towards m2m2 on m1m1 and towards m1m1 on m2m2. towards the center of the earth towards m2m2 The space shuttle releases a 470-kg communications satellite while in an orbit that is…Read More »
CBSE Class XI PHYSICS Revision NotesCHAPTER 9MECHANICAL PROPERTIES OF SOLIDS Elastic behaviour of solids Stress and strain Hooke’s law Young’s modulus, bulk modulus, shear modulus of rigidity Poisson’s Ratio, Elastic Energy Deforming Force : A force which produces a change in configuration of…Read More »
CBSE Class 11 Physics NCERT SolutionsChapter 9MECHANICAL PROPERTIES OF SOLIDS 1. A Steel wire of length 4.7 m and the cross-sectional area of stretches by the same amount as a Copper wire of length 3.5 m and the cross-sectional area of under a given…Read More »
CBSE Test Paper 01 Chapter 9 Mechanical Properties of Solids A solid brass sphere is initially surrounded by air, and the air pressure exerted on it is 1.0 ×× 105105 N/ m2m2 (normal atmospheric pressure). The sphere is lowered into the ocean to a depth at which the…Read More »
CBSE Class 11 PHYSICS Revision NotesCHAPTER 10MECHANICAL PROPERTIES OF FLUIDS Pressure, Pascal’s Law, Effects of gravity on fluid pressure Viscosity, Stokes’ law, velocity, streamline and turbulent flow Bernoulli’s theorem and its applications Surface energy and surface tension Fluids : Fluids are those substances which…Read More »
CBSE Class 11 Physics NCERT SolutionsChapter 10MECHANICAL PROPERTIES OF FLUIDS 1. Explain why (a) The blood pressure in humans is greater at the feet than at the brain (b) Atmospheric pressure at a height of about 6 km decreases to nearly half…Read More »
CBSE Test Paper 01 Chapter 10 Mechanical Properties of Fluids In a hydraulic lift the force applied on the smaller cylinder of area A1 is F1. If the area of the larger cylinder is A2 the maximum weight that can be lifted is 1 F1F1…Read More »
CBSE Class 11 Physics NCERT Solutions Chapter 11 THERMAL PROPERTIES OF MATTER 1. The triple points of Neon and Carbon dioxide are 24.57 K and 216.55 K respectively. Express these temperatures on the Celsius and Fahrenheit scales. Ans. Kelvin and Celsius scales are…Read More »
