- AConservation law.
- BInverse square law.
- CBoth a and b.
- DNone.
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A star emits light of 5500 Å wavelength. Its appears blue to an observer on the earth, it means
|
(a) Star is going away from the earth |
(b) Star is stationary |
|
(c) Star is coming towards earth |
(d) None of the above |
A magnetic field can be produced by
|
(a) A moving charge |
(b) A changing electric field |
|
(c) None of these |
(d) Both of these |
An N-type and P-type silicon can be obtained by doping pure silicon with
|
(a) Arsenic and Phosphorous |
(b) Indium and Aluminium |
|
(c) Phosphorous and Indium |
(d) Aluminium and Boron |
A coil resistance 20W and inductance 5H is connected with a 100V battery. Energy stored in the coil will be
|
(a) 41.5 J |
(b) 62.50 J |
(c) 125 J |
(d) 250 J |