NEET JEE TGT PGT KVS NVS MCQs lecture 1

Part -1 Important MCQs of Electoral politics

CLASS 12 BIOLOGY LESSON 1 REPRODUCTION IN ORGANISM OBJECTIVE QUESTIONS MCQ'S TEST

A physicist was performing experiments to study the velociyt and wavelength of the electron. In one case, the electron was accelerated through a potential differences of 1 KV and in second case it was accelerated through a potential difference of 2KV. The velocity acquired by the electron will be

An AC voltage source described by V=10cos(pi/2)t is connected to a 1muF capacitor as shown in figureure. The key K is closed at t=0 . the time (tgt0) after which the magntitude of current I reaches its maximum value for the first time is .

An X-ray tube is operating at 150 kV and 10 mA. If only 1% of the electric power supplied is converted into X-rays, the rate at which the target is heated in calories per second is

The dielectric permittivity of gaseous argon at standard conditions is 1.00054. Find the dipole moment of an argon atom in an electric field of 10 kV/m. Compare with the dipole moment of a water molecule.

An electron accelerated in an electric field of 20 kV enters a uniform magnetic field with induction 0.1 T. Its velocity vector makes an angle of 75^@ with the magnetic field vector. Find the shape of the path.

A charged particle is accelerated thrught a potential difference of 12 kV and acquires a speed of 1.0X10^6 ms^(-1). It is then injected perpendiuclarly into a magnetic field of strenght 0.2 T. find the radius of the circle described by it.