Neet PYQ 2007

The electric and magnetic field of an electromagnetic wave are:

A mass of $2.0\text{kg}$ is put on a flat pan attached to a vertical spring. The spring constant is $200\text{N/m}$. What should be the minimum amplitude of the motion, so that the mass gets detached from the pan? ($g=10{\text{m/s}}^2$)

Two satellites of earth, $S_1$ and $S_2$, are moving in the same orbit. The mass of $S_1$ is four times the mass of $S_2$. Which one of the following statements is true?

Charges $+q$ and $-q$ are placed at points $A$ and $B$, respectively; distance $2L$ apart. $C$ is the midpoint. The work done in moving a charge $+Q$ along the semicircle $CRD$ is:

A beam of electrons passes un-deflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move: