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.
3m
4m
5m
6m
Correct answer is A
F = \(\frac{1}{2L}\)\(\sqrt\frac{T}{m}\)
F1L1 = F2L2
500 x 0.9 = 150 x L2
therefore, L2 = 3m
Ripples on water and light waves are similar because both?
have the same frequency
can be refracted and diffracted
are longitudinal waves
have the same velocity
Correct answer is B
Examples of transverse waves include:
Some basic properties of light :
All kinds of waves have the same fundamental properties of reflection, refraction, diffraction and interference,
and all waves have a wavelength, frequency, speed and amplitude.
What happens when a gas expands at constant temperature?
its pressure decreases
the total momentum of its molecules remains constant
its pressure decreases and the total momentum of its moleculees remains constant
its pressure decreses and the total kinetic energy of its molecule decreases
Correct answer is A
No explanation has been provided for this answer.
3 : 5
5 : 3
3 : 7
7 : 3
Correct answer is B
Heat lost = heat gained
mH x c x (70 - 45) = mc x c x (45 - 30)
\(\frac{m_c}{m_H}\) = \(\frac{5}{3}\)
1.15 x 109 s
1.15 x 107 s
1.15 x 105 s
1.15 x 104 s
Correct answer is D
Heat energy = Elect. energy
0.5 x 2.3 x 106 = 100t
t = 1.15 x 104s