Assertion : Magnetic Resonance Imaging $(MRI)$ is a useful diagnostic tool for producing images of various parts of human body.
Reason : Protons of various tissues of the human body play a role in $(MRI)$.
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
If the Assertion is correct but Reason is incorrect.
If both the Assertion and Reason are incorrect.
Two tangent galvanometers having coils of the same radius are connected in series. A current flowing in them produces deflections of $60° $ and $45°$ respectively. The ratio of the number of turns in the coils is
Tangent galvanometer is used to measure
A certain amount of current when flowing in a properly set tangent galvanometer, produces a deflection of $ 45°.$ If the current be reduced by a factor of $\sqrt 3 $, the deflection would
Tangent galvanometer is used to measure
The magnet of vibration magnetometer is heated so as to reduce its magnetic moment by $36\%$. By doing this the periodic time of the magnetometer will