A resistor of 10 kilo ohms having tolerance 10% is connected in series with another resistor of 20 kilo ohms and tolerance 20%. the tolerance of the combination will be near to-

A)10% B) 13% C) 17% D) 20%.

ANSWER IS : C.

How?

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
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