A bar magnet of magnetic moment M is placed at right angles to a magnetic
A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force…
7 years ago
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A particle of mass ‘m’ is kept at rest at a height 3R from the surface of earth
A particle of mass 'm' is kept at rest at a height 3R from the surface of earth, where 'R'…
7 years ago
The radius of a planet is twice the radius of earth. Both have almost
The radius of a planet is twice the radius of earth. Both have almost equal average mass densities. If Vp…
7 years ago
Two sources P and Q produce notes of frequency 660 Hz each.
Two sources P and Q produce notes of frequency 660 Hz each. A listener moves from P to Q with…
7 years ago
Two Carnot engine A and B are operated in series. The engine A receives
Two Carnot engine A and B are operated in series. The engine A receives that heat from the source at…
7 years ago
An electric dipole of dipole moment p is aligned parallel to a uniform electric field E
An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. The energy required to…
7 years ago
One way in which the operation of a n-p-n transistor differs from that of a p-n-p
One way in which the operation of a n-p-n transistor differs from that of a p-n-p Options (a) the emitter…
7 years ago
In an unbiased p-n junction, holes diffuse from the p-region to n-region because of
In an unbiased p-n junction, holes diffuse from the p-region to n-region because of Options (a) the potential difference across…
7 years ago
The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is
The de-Broglie wavelength of neutron in thermal equilibrium at temperature T is Options (a) 30.8 / √T Å (b) 3.08…
7 years ago
A source of light is placed at a distance of 50 cm from a photocell and the stopping
A source of light is placed at a distance of 50 cm from a photocell and the stopping potential is…
7 years ago