A radiotransmitter radiates 1 kW power at a wavelength 198.6 m. How many photons
A radiotransmitter radiates 1 kW power at a wavelength 198.6 m. How many photons does it emit per second Options…
7 years ago
Physics
The temperature of ideal gas is reduced from 927° C to 27° C. The r.m.s velocity
The temperature of ideal gas is reduced from 927° C to 27° C. The r.m.s velocity of the molecules becomes…
7 years ago
The resistance of a wire is 5 ohm at 50° C and 6 ohm at 100° C. The resistance
The resistance of a wire is 5 ohm at 50° C and 6 ohm at 100° C. The resistance of…
7 years ago
The flux linked with a coil at any intant t is given by ?=10t² – 50t + 250
The flux linked with a coil at any intant t is given by ?=10t² - 50t + 250. The induced…
7 years ago
A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s
A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s. Then he experiences…
7 years ago
The fluctuation in the input voltage of 200 V to a domestic circuit is +10V
The fluctuation in the input voltage of 200 V to a domestic circuit is +10 V. The power fluctuation will…
7 years ago
An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change
An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change from its peak…
7 years ago
A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis. The radius…
7 years ago
Radius of first orbit of the electron in a hydrogen atom is 0.53 Å. So the radius
Radius of first orbit of the electron in a hydrogen atom is 0.53 Å. So the radius of the third…
7 years ago
Three fourth of the active material decays in a radioactive sample in 3/4 sec
Three fourth of the active material decays in a radioactive sample in 3/4 sec. The half life of the sample…
7 years ago