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The average kinetic energy of the thermal neutrons is of the order of (Boltzmann's constant 
|
(a) 0.03 eV |
(b) 3 eV |
(c) 3 KeV |
(d) 3 MeV |
A point source of light is placed at a distance, of 2f from a converging lens of focal length f. The intensity on the other side of the lens is maximum at a distance:
The electric potential at the surface of an atomic nucleus (Z = 50) of radius 9.0 × 
cm is
|
(a) 80 volts |
(b) 8 |
(c) 9 volts |
(d) 9 |
The two bulbs as in the above question are connected in series to a 200 volt line. Then
|
(a) The potential drop across the two bulbs is the same |
|
(b) The potential drop across the 40 watt bulb is greater than the potential drop across the 100 watt bulb |
|
(c) The potential drop across the 100 W bulb is greater than the potential drop across the 40 W bulb |
|
(d) The potential drop across both the bulb is 200 volt |
