Physics Test - ...

The heat given to a substance during the phase change is called:

What is the speed of electromagnetic waves in terms of dielectric constant and vacuum permeability?

If the kinetic energy of a body is increased nine times then the momentum of the body will be increased by:

What is the number of values that an electron spin quantum number has?

A simple pendulum has a length \(l\) and the mass of the bob is \(m\). The bob is given a charge \(q\) coulomb. The pendulum is suspended between the vertical plates of a charged parallel plate capacitor. If \(E\) is the electric field strength between the plates, the time period of the pendulum is given by

In the magnetic meridian of a certain place, the horizontal component of the earth's magnetic field is \(0.26 \mathrm{G}\) and the dip angle is \(60^{\circ}\). What is the magnetic field of the earth at this location?

A rectangular loop of sides 8 cm and 2 cm with a small break in it is moving out of a region of uniform magnetic field of 0.3 T, directed normal to the loop. What is the emf developed across the break if the velocity of the loop is 1 cms^-1 in a direction normal to the longer side of the loop?

After absorbing a slowly moving neutron of mass \(m_N\) (momentum \(\approx 0\) ) a nucleus of mass \(\mathrm{M}\) breaks into two nuclei of masses \(\mathrm{m}_1\) and \(5 \mathrm{~m}_1\left(6 \mathrm{~m}_1=\mathrm{M}+\mathrm{m}_{\mathrm{N}}\right)\) respectively. If the de Broglie wavelength of the nucleus with mass \(m_1\) is \(\lambda\), the de Broglie wavelength of the nucleus will be