Question:

12 13 14 For question numbers 11 12 13 and 14 two statements

Last updated: 6/7/2023

12 13 14 For question numbers 11 12 13 and 14 two statements

12 13 14 For question numbers 11 12 13 and 14 two statements are given one labelled Assertion A and the other labelled Reason R Select the correct answer to these questions from the codes a b c and d as given below a Both A and R are true and R is the correct explanation of A b Both A and R are true but R is NOT the correct explanation of A c A is true but R is false d A is false and R is also false Assertion A To convert a galvanometer in to ammeter a small resistance shunt is connected in parallel to the coil of galvanometer Reason R An ideal ammeter has infinite resistance Assertion A The wire of potentiometer is made by constantan and manganin Reason R Constantan and manganin are alloys and dependence of resistivity of alloys in temperature is negligible Assertion A A particle will follow helical path in magnetic field if its velocity v and direction of magnetic field B are at angle of Reason R The component vsin o will provide the centripetal force and magnetic field will not apply any force on the component vcos p Assertion A In a metallic wire if we increase the temperature of wire the resistance of the wire also increases Reason R on increasing the temperature thermal velocity of electrons decreases and dingropoor in this way number of collision decreases 1 1 1