Identify the semiconductor devices whose characteristics are given below, in the order (a), (b), (c), (d) :
On a hot summer night, the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally, the Huygens' principle leads us to conclude that as it travels, the light beam :
Consider a spherical shell of radius R at temperature T. The black body radiation inside it can be considered as an ideal gas of photons with internal energy per unit volume u=VU∝T4 and pressure p=31(VU). If the shell now undergoes an adiabatic expansion the relation between T and R is :
If all the words (with or without meaning) having five letters, formed using the letters of the word SMALL and arranged as in a dictionary; then the position of the word SMALL is :
The supply voltage to a room is 120 V. The resistance of the lead wires is 6 Ω A 60 W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb?
The intercepts on x-axis made by tangents to the curve, y=∫0x∣t∣dt,x∈R,which are parallel to the line y=2x, are equal to