Assertion: If θ be the angle between →A and →B, then tanθ=→A×→B→A.→B
Reason: →A×→B is perpendicular to →A.→B
Assertion: If a≠b, then (a,b)≠(b,a).
Reason: (4,−3) lies in Quadrant IV
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.
Reason : Work function hf0 where f0 is the threshold frequency.
Assertion : Salts like KCl,KNO3 i.e., inert electrolytes are used in salt bridge.
Reason : An inert electrolyte can easily be filled in the U-tube.