The rate of increase of thermo-e.m.f. with temperature at the neutral temperature
The rate of increase of thermo-e.m.f. with temperature at the neutral temperature of a thermocouple Options (a) is positive (b)…
7 years ago
AIPMT2011
A current of 2A flows through a 2Ω resistor when connected across a battery
A current of 2A flows through a 2Ω resistor when connected across a battery. The same battery supplies a current…
7 years ago
Fusion reaction takes place at high temperature because
Fusion reaction takes place at high temperature because Options (a) nuclei break up at high temperature (b) atoms get ionised…
7 years ago
The power obtained in a reactor using U²³⁵ disintegration is 1000 kW
The power obtained in a reactor using U²³⁵ disintegration is 1000 kW. The mass decay of U²³⁵ per hour is…
7 years ago
The wavelength of the first line of Lymasn series for hydrogen atom is equal
The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line…
7 years ago
In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected to a capacitor…
7 years ago
An ac voltage is applied to a resistance R and an inductor L in series
An ac voltage is applied to a resistance R and an inductor L in series. If R and the inductive…
7 years ago
A body projected vertically from the earth reaches a height equal to earth’s radius
A body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. The…
7 years ago
A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel.The lift starts moving upwards wi
A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control…
7 years ago
A body of mass M hits normally a rigid wall with velocity V and bounces back
A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity.…
7 years ago