Physics Test 23...

Moment of inertia, rotational kinetic energy, and angular momentum of a body is I, E, and L respectively then :

Consider a mixture of n moles of helium gas and 2n moles of oxygen gas (molecules taken to be rigid) as an ideal gas. Its C_P/C_V value will be :

If the energy of the electron in the 1^st orbit of hydrogen is -13.6 eV, then how much is the energy (in eV) in the 2^nd orbit?

Which of the following statement is true regarding body is in equilibrium?

A beam of cathode rays is subjected to crossed Electric (E) and Magnetic field (B). The fields are adjusted such that the beam is not deffected. The specific charge of the cathode rays is given by  (where V is the potential difference between cathode and anode)

The center of an electric dipole is placed at the origin, with the axis of the dipole along the x-axis. The dipole moment of the system is  the distance between the two charges is 2a and each charge has a magnitude q. The electric potential due to the dipole at a point D, d distance away from the origin, on the equatorial plane, is,

The material filled between the plates of a parallel capacitor has resistivity 200 Ωm. The value of capacitance of the capacitor is 2 pF. If a potential difference of 40 V is applied across the plates of the capacitor, then the value of leakage current flowing out of the capacitor is: (given the value of relative permitivity of material is 50)

An LED has a maximum drop of 1.5 V. If the supply voltage is 10 V and R_s = 470Ω, then maximum value of LED current will be:

A long straight wire with a circular cross-section having radius R, is carrying a steady current I. The current I is uniformly distributed across this cross-section. Then the variation of magnetic field due to current I with distance r(r < R) from its centre will be :

A series resonant LCR circuit has a quality factor (Q-factor) 0.4. If R = 2 kΩ, C = 0.1 μF, then the value of inductance is