The most important characteristic of electron in the production of X-rays is
The most important characteristic of electron in the production of X-rays is Options (a) Revolution of electron around the nucleus…
7 years ago
AFMC2001
The velocity of radio-waves is 3×10⁵ km/s. The frequency corresponding to wavelength
The velocity of radio-waves is 3x10⁵ km/s. The frequency corresponding to wavelength of 300 m is Options (a) 1 MHz…
7 years ago
Light of frequency 8×10¹⁵ Hz is incident on a substance of photoelectric work
Light of frequency 8x10¹⁵ Hz is incident on a substance of photoelectric work function 6.125 eV. The maximum kinetic energy…
7 years ago
Current flows in semi-conductors through
Current flows in semi-conductors through Options (a) Protons (b) Electrons (c) Holes (d) Holes and electrons Correct Answer: Holes and…
7 years ago
Ohm’s law is not applicable except to
Ohm's law is not applicable except to Options (a) Insulator (b) Semi-conductors (c) Arc lamp (d) All of these Correct…
7 years ago
Moderator used in nuclear reactor is
Moderator used in nuclear reactor is Options (a) Ice (b) Boron rods (c) Cadmium rods (d) Heavy water Correct Answer:…
7 years ago
Wb/m² is equal to
Wb/m² is equal to Options (a) henry (b) watt (c) tesla (d) dyne Correct Answer: teslaExplanation:No explanation available. Be the…
7 years ago
Rutherford’s ∝ particle experiment showed that the atoms have
Rutherford's ∝ particle experiment showed that the atoms have Options (a) proton (b) nucleus (c) neutron (d) electron Correct Answer:…
7 years ago
When a radioactive substance emits an ∝ particle, its position in the periodic table
When a radioactive substance emits an ∝ particle, its position in the periodic table is lowered by Options (a) one…
7 years ago
A particle is moving with a uniform velocity along a straight line path
A particle is moving with a uniform velocity along a straight line path. A force is not required to Options…
7 years ago