Radio carrier waves are generated by causing electrons to oscillate rapidly in
a microphone
a television camera
an antenna
coaxial cables
a transmitter
Correct answer is E
No explanation has been provided for this answer.
50cm
20cm
10cm
30cm
70cm
Correct answer is D
Taking moment about F,
200(X + 20) + (500 x 20) = (1000 x 20)
200X + 4000 + 10000 = 20000
200X + 14000 = 20000
200X = 20000 - 14000
200X = 6000
X = 30cm
an electron
a \(\beta\)-particle
an \(\alpha\)-particle
a proton
an atom
Correct answer is D
No explanation has been provided for this answer.
a little above half of its initial energy
a little below half of its initial energy
a half of its initial energy
a little above its initial energy
a little below its initial energy
Correct answer is C
Energy for complete distance is twice the energy for half the distance
On which of the following is the operation of a moving coil galvanometer based?
Magnetic effect of electric current
Electromagnetic induction
Chemical reaction produced by electricity
Force on current carrying conductor in a magnetic field
Electrical energy and power
Correct answer is D
No explanation has been provided for this answer.