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.
Which of the following arrangements of radiations is in the order of decreasing penetrating power?
\(\alpha, \beta, \gamma\)
\(\alpha, \gamma, \beta\)
\(\gamma, \beta, \alpha\)
\(\beta, \gamma, \alpha\)
Correct answer is C
No explanation has been provided for this answer.
Which of the following statements about X-rays is correct? X-rays
are produced when a metal surface is irradiated with ultraviolet light
are produced when a metal target is used to block fast moving electrons
have long wavelengths and are therefore very penetrating
are not part of the electromagnetic spectrum
Correct answer is B
No explanation has been provided for this answer.
1.0eV
3.0eV
4.0eV
7.0eV
Correct answer is A
K.E = hf - Wo
= 4 - 3 = 1eV
An atom in an excited state is one whose
potential energy is minimum
potential energy is maximum
electron are in the conduction band
electron have moved to higher energy level
Correct answer is D
No explanation has been provided for this answer.
Irms leads Vrms by 60o
Irms slags Vrms by 60o
Vrms lags Irms by 90o
Vrms leads Irms by 90o
Correct answer is C
No explanation has been provided for this answer.