3 JEE Main 2012 Units and Dimensions previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2012 previous-year questions from the Units and Dimensions chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Units and Dimensions chapter hub.
A student measured the diameter of a wire using a screw gauge with the least count 0.001 ~cm and listed the measurement…
The electrical resistance R of a conductor of length l and area of cross section a is given by R=(ρ l)/(a) where ' ρ '…
Given that K= energy, V= velocity, T= time. If they are chosen as the fundamental units, then what is dimensional formu…