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 particles are termed nucleons in a neutral atom?
protons and neutrons
neutrons and electrons
protons and electrons
protons, electrons and neutrons
Correct answer is A
No explanation has been provided for this answer.
critical energy
ionization energy
work function
planck's constant
Correct answer is C
No explanation has been provided for this answer.
5.56 x 1019Hz
1.66 x 1019Hz
1.12 x 1015Hz
8.42 x 1014Hz
Correct answer is C
F = \(\frac{K.E + Wo}{h}\)
= \(\frac{3.0 \times 1.6 \times 10^{-19} + 2.56 \times 106{-19}}{6.6 \times 106{-34}}\)
- 1.12 x 10-15HZ
6.3A
33.3A
37.2A
40.0A
Correct answer is A
XL = \(2\pi f L\)
= = 2 x 3.142 x 50 x 0.12
= 37.68\(\Omega\)
Z = \(\sqrt{R^2 + X_L^2} = \sqrt{4^2 + 37.68^2}\)
I = \(\frac{V}{z} = \frac{240}{37.89}\)
= 6.3A
Which of the following devices does not makes use of eddy current for its action? A/An
galvanometer
speedometer
induction furnace
speedometer
Correct answer is A
No explanation has been provided for this answer.