13. Two reference frames S and S’ are moving towards each other with relative velocity 3c/4, where c is the speed of light. Now an object in S frame is […]
11. The number of molecules dN with speeds lying between v and v+dv of a classical gas is given by dN = ρ(v) dv. The distribution ρ(v) is shown for […]
10. A multimeter has an internal resistance of 0.5 Ohms while another has an internal resistance of 5×106 Ohms. What use can the two multimeters be best put to? a. […]
9. Light is incident from a medium with refractive index n = 1.72 onto vacuum. The smallest angle of incidence (measured with respect to the normal) for which light is […]
8. A sound wave propagating in a solid block can have the following modes: a. One transverse only b. One longitudinal only c. Two transverse and one longitudinal only d. […]
6. Four discharged capacitors C1, C2, C3 and C4 are connected as shown in the figure. A potential difference is applied between the points X and Y and the system […]
5. A protein can exist in two conformational states A and B with energies -E and +E respectively. Assume the system (single protein) is in thermal equilibrium with a heat […]
4. The probability distribution function P(x) of a continuous random variable x is shown in the left figure. Which of the curves in the right figure best represents the cumulative […]
