Consider the followig statements: Statement-1: Work done by friction is always negative. Statement-2 : If frictional force acts on a body its K.E. may decrease Statement 3: A rigid disc rolls without slipping on a fixed rough horizontal surface with uniform angular velocity.Then the acceleration of lowest point on the disc is zero. Statements-4: Consider an isolated sun planet system in which the planet moves in elliptical path around the fixed sun. Kinetic energy of the planet changes with time but its angular momentum with respect to centre of the sun remains constants. STatement-5: Net electric field inside the material of a conductor must always be zero Then, the number of incorrect statements is

Consider the followig statements: Statement-1: Work done by friction

1.	Consider the followig statements: Statement-1: Work done by friction is always negative. Statement-2 : If frictional force acts on a body its K.E. may decrease Statement 3: A rigid disc rolls without slipping on a fixed rough horizontal surface with uniform angular velocity.Then the acceleration of lowest point on the disc is zero. Statements-4: Consider an isolated sun planet system in which the planet moves in elliptical path around the fixed sun. Kinetic energy of the planet changes with time but its angular momentum with respect to centre of the sun remains constants. STatement-5: Net electric field inside the material of a conductor must always be zero Then, the number of incorrect statements is
Answer» <html><body><p>2<br/>2<br/>3<br/>4</p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/c-7168" style="font-weight:bold;" target="_blank" title="Click to know more about C">C</a></body></html>