A hollow sphere of charge does not produce an electric field at any
A hollow sphere of charge does not produce an electric field at any Options (a) Point beyond 2 metres (b)…
8 years ago
Questions
A pure semiconductor behaves slightly as a conductor at
A pure semiconductor behaves slightly as a conductor at Options (a) Room temperature (b) Low temperature (c) High temperature (d)…
8 years ago
Avalanche breakdown is due to
Avalanche breakdown is due to Options (a) Collision of minority charge carrier (b) Increase in depletion layer thickness (c) Decrease…
8 years ago
A leaf which contains only green pigments is illuminated by a laser light
A leaf which contains only green pigments is illuminated by a laser light of wavelength 0.6328 μm. It would appear…
8 years ago
In a coil having e.m.f. of 8 V induced for 0.05 s. The value of current changes
In a coil having e.m.f. of 8 V induced for 0.05 s. The value of current changes from 2 A…
8 years ago
A straight conductor of length 0.4 m is moved with a speed of 7 ms⁻¹perpendicular
A straight conductor of length 0.4 m is moved with a speed of 7 ms⁻¹perpendicular to a magnetic field of…
8 years ago
Which one of the following statements is WRONG in the context of X-rays generated
Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube? Options (a)…
8 years ago
A photocell employs photoelectric effect to convert
A photocell employs photoelectric effect to convert Options (a) Change in the frequency of light into a change in the…
8 years ago
Characteristic X-rays are produced due to
Characteristic X-rays are produced due to Options (a) Transfer of momentum in collision of electrons with target atoms (b) Transition…
8 years ago
A galvanometer having resistance of 50 Ω requires a current of 100μA to give full
A galvanometer having resistance of 50 Ω requires a current of 100μA to give full scale deflection. How much resistance…
8 years ago