In N-type semi-conductor current is due to
In N-type semi-conductor current is due to Options (a) Electrons (b) Holes (c) Electrons and holes (d) None of these…
8 years ago
Questions
An LED is constructed from a p-n junction based on a certain semi-conducting
An LED is constructed from a p-n junction based on a certain semi-conducting material whose energy gap is 1.9 eV.…
8 years ago
A metal conductor of length 1m rotates vertically about one of its ends at angular
A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radian per second.…
8 years ago
A coil of resistance and 1.0 H inductance is connected to an a.c. source of frequency
A coil of resistance and 1.0 H inductance is connected to an a.c. source of frequency 200/2π Hz. Phase angle…
8 years ago
If the minimum energy of photons needed to produce photoelectrons is 3 eV,
If the minimum energy of photons needed to produce photoelectrons is 3 eV, bombardinbg the photoelectric material by a number…
8 years ago
A particle of mass 1 mg has the same wavelength as an electron moving with a velocity
A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 x…
8 years ago
Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons. Its work function is Options (a) 23…
8 years ago
A galvanometer acting as a voltmeter will have
A galvanometer acting as a voltmeter will have Options (a) A high resistance in parallel with its coil (b) A…
8 years ago
A battery having e.m.f. 4 volt and internal resistance 0.5 Ω is connected
A battery having e.m.f. 4 volt and internal resistance 0.5 Ω is connected with a resistance of 4.5 Ω, then…
8 years ago
The mass number of nucleus is always
The mass number of nucleus is always Options (a) Equal to atomic number (b) Less than atomic number (c) More…
8 years ago