- Aelectricity
- Bmagnetism
- Cmechanics
- Dboth (A) and (B)
Explanation:
Maxwell's equation describe the fundamental laws of electricity and magnetism. His equations describe how electric and magnetic fields are generated and altered by each other and by charges and currents.
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If V be the accelerating voltage, then the maximum frequency of continuous X-rays is given by
|
(a) |
(b) |
(c) |
(d) |
A star producing light of wavelength 6000 Å moves away from the earth with a speed of 5 km/sec. Due to Doppler effect the shift in wavelength will be ( c = 3
|
(a) 0.1 Å |
(b) 0.05 Å |
(c) 0.2 Å |
(d) 1 Å |
The current flowing in two coaxial coils in the same direction. On increasing the distance between the two, the electric current will
|
(a) Increase |
(b) Decrease |
|
(c) Remain unchanged |
(d) The information is incomplete |
The decay constant of a radioactive element is 1.5
per second. Its mean life in seconds will be
|
(a) 1.5 |
(b) 4.62 |
(c) 6.67 |
(d) 10.35 |
The correct graph between the maximum energy of a photoelectron and the inverse of wavelength of the incident radiation is given by the curve

|
(a) A |
(b) B |
(c) C |
(d) None of the above |