The force of kinetic friction between two surfaces is independent of the area of contact between the surfaces.Group of answer choicesTrueFalse

Choose the correct optionSelect an answerAThe friction force is dependent on the roughness of surface.BThe kinetic friction is proportional to normal reactionCThe friction is independent on the area of contactDAll statement are correct.

Which of the following statements about friction is NOT correct? A.The force of kinetic friction is less than the force of static friction B.The force of kinetic friction between two surfaces is independent of the areas in contact provided the normal reaction is unchanged C.The force of rolling friction between two surfaces is less than the force of sliding friction D.The angle of friction is the angle between the normal reaction and the force of friction E.Friction may be reduced by lubrication

Friction is a force that ALWAYS acts:a) In the direction of motionb) Opposite the direction of motionc) Perpendicular to the surfaces in contactd) It depends on the materials in contact

Given below are two statements:Statement (I) : The limiting force of static friction depends on the area of contact and independent of materials.Statement (II) : The limiting force of kinetic friction is independent of the area of contact and depends on materials.In the light of the above statements, choose the most appropriate answer from the options given below :JEE Main 2024 (27 Jan Shift 2)AStatement I is correct but Statement II is incorrectBStatement I is incorrect but Statement II is correctCBoth Statement I and Statement II are incorrectDBoth Statement I and Statement II are correct

What is friction?I.   A force that acts parallel to two surfaces in contactII.  A force that opposes relative motionIII. A force that acts through the centre of mass