AIPMT 2001 | NEET Year Wise Previous Years Questions

MCQ (Single Correct Answer)

In Thomson mass spectrograph $$\overrightarrow E \bot \overrightarrow B $$ then the velocity of electron beam will be

$${{\left| {\overrightarrow E } \right|} \over {\left| {\overrightarrow B } \right|}}$$

$$\overrightarrow E \times \overrightarrow B $$

$${{\left| {\overrightarrow B } \right|} \over {\left| {\overrightarrow E } \right|}}$$

$${{{{\overrightarrow E }^2}} \over {{{\overrightarrow B }^2}}}$$

MCQ (Single Correct Answer)

If number of turns, area and current through a coil is given by n, A and $$i$$ respectively then its magnetic moment will be

$${{ni} \over {\sqrt A }}$$

MCQ (Single Correct Answer)

An electron having mass m and kinetic energy E anter in uniform magnetic field B perpendiculaly, then its frequency will be

$${{eE} \over {qvB}}$$

$${{2\pi m} \over {eB}}$$

$${{eB} \over {2\pi m}}$$

$${{2m} \over {eBE}}$$

MCQ (Single Correct Answer)

Among which the magnetic susceptibility does not depened on the temperature ?

diamagnetism

paramagnetism

ferromagnetism