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.
one quarter of the wavelength
half of the wavelength
the wavelength
twice the wavelength
Correct answer is B
No explanation has been provided for this answer.
3.4m
2.7m
1.6m
0.8m
Correct answer is C
n = \(\frac{\text{real depth}}{\text{apparent depth}}\)
1.3 = \(\frac{2.1}{\text{apparent}}\)
A.D = \(\frac{2.1}{1.3} = 1.6\)
real and 6.67cm from the lens
virtual and 6.67cm from the lens
real and 60.00cm from the lens
virtual and 60.00cm from the lens
Correct answer is B
The focal length of a diverging lens is negative.
f = -12 cm; u = 15 cm.
\(f = \frac{uv}{u + v}\)
\(-12 = \frac{15v}{15 + v}\)
\(-12 (15 + v) = 15v \implies -180 - 12v = 15v\)
\(-180 = 15v + 12v \implies -180 = 27v\)
\(v = \frac{-180}{27} = -6.67 cm\)
The image is virtual and 6.67 cm from the lens.
What type of wave is emitted by a loud speaker?
Transverse
Longitudinal
Gamma
Radio
Correct answer is B
No explanation has been provided for this answer.
The diagram given illustrates a wave form. Determine the speed of the wave
5.4 ms-1
8.4 ms-1
9.6 ms-1
10.0 ms-1
Correct answer is D
No explanation has been provided for this answer.