Question

The questions consist of two atatements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses :
The electrical resistance of a column of `0.5 M NaOH` solution of diameter `1 cm` and length `50 cm` is ` 5.55 xx 10^3 "ohm"`.
Its resistivity is equal to `75.234 Omega cm`.
A. If both the assertion and reason are true but the reason is ont the correct explanation of assertion
B. If both the assertion and reason are true but the reason is not the correct explanation of assertion.
C. If the assertion is true but reason is false.
D. If assertion is false but reason is rue

Answer 1

Correct Answer - c
` R = rho xx 1/A (A=pir^2)`
`:. rho = (Rxx A)/(l)= ( 5.55 xx 10^3 (0.5)^2xx 3.14)/(50) = 87 . 13` ohm.