Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
5 volts
10 volts
15 volts
20 volts
Correct answer is B
For transformation, Es = e.m.f. of secondary coil
Ep = Np
Np = e.m.f. of secondary coil
Ns = number of turns in secondary coil
Ns = number of turns in primary coil
\(\frac{30}{300}\) = \(\frac{x}{100}\) = 300
X = 3000
X = 10 volts
Tha mass of a proton is approximately equal to that of
an \(\alpha\)-particle
a \(\beta\)-Particle
a neutron
an electron
Correct answer is C
No explanation has been provided for this answer.
N0.65
N0.39
N3.90
N0.13
Correct answer is D
No explanation has been provided for this answer.
Which of the following can be described as high tension transmission?
High resistance and low voltage
Low current and high voltage
High current and low voltage
High current and low resistance
Correct answer is B
No explanation has been provided for this answer.
doppler effect
resonance
ultra sound
rarefaction
Correct answer is A
The Doppler effect or Doppler shift is the change in frequency of a wave in relation to an observer who is moving relative to the wave source.
The drop in pitch of ambulance sirens as they pass by and the shift in red light are common examples of the Doppler Effect.