A length -scale (l) depends on the permittivity `(epsilon)` of a dielectric material, Boltzmann constant `(k_(B))`, the absolute temperature (T), the number pr unit volume (n) of certain charged paticles, and the charge (q) carried by each of the particles. Which of the following expression for l is dimensionally correct?

A length - scale (l) depends on the permittivity (epsilon) of a dielctric material. Boltzmann constant (k_(B)) , the absolute tempreture (T) , the number per unit volume (n) of certain charged particles, and the charge (q) carried by each of the partcles. which of the following expression (s) for I is (are) dimensionally correct?

A conductor of length of l and area of cross section A has n number of electrons per unit volume of the conductor. The total charge carried by the conductor is

The vander waal's equation for a gas is (p + a/V^(2))(V - b) = nRT where p, V, R, T and n represent the Pressure, Volume, universal gas constant, absolute temperature and number of moles of a gas respectively, where a and b are constants. The ratio b/a will have the following dimensional formula

The vander waal's equation for a gas is (p + a/V^(2))(V - b) = nRT where p, V, R, T and n represent the Pressure, Volume, universal gas constant, absolute temperature and number of moles of a gas respectively, where a and b are constants. The ratio b/a will have the following dimensional formula

The two ends of a uniform rod of thermal conductivity k are maintained at different but constant temperatures. The temperature gradientat any point on the rod is (d theta)/(dl) (equal to the difference in temperature per unit length). The heat flow per unit time per unit cross-section of the rod is l then which of the following statements is/are correct:

The two ends of a uniform rod of thermal conductivity k are maintained at different but constant temperatures. The temperature gradientat any point on the rod is (d theta)/(dl) (equal to the difference in temperature per unit length). The heat flow per unit time per unit cross-section of the rod is l then which of the following statements is/are correct: