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.
4.0 x 1014Hz
6.0 x 1014Hz
7.5 x 1014Hz
9.0 x 1014Hz
Correct answer is A
1.5 = \(\frac{6 \times 10^{14}}{F}\)
F = 4 x 1014Hz
the focal length
two times the focal length
the distance of the image
two times the radius of curvature
Correct answer is A
No explanation has been provided for this answer.
200Hz
400Hz
800Hz
1600Hz
Correct answer is B
F = \(\frac {1}{2L}\) \(\sqrt\frac{T}{m}\)
T2 = 4T1 ; L2 = 2L1
\(\frac{2F_1L_1}{2F_2L_2}\) = \(\sqrt\frac{T_1}{T_2}\)
\(\frac{400\times L_1}{F \times L_1}\) = \(\sqrt\frac{T_1}{4T_1}\)
F = 400Hz
5.5Hz
148.5Hz
200.0Hz
550.0Hz
Correct answer is C
\(\lambda\) = 4L = 4 X 45 = 180cm
F = \(\frac {V}{\lambda}\)
= \(\frac {360}{180 \times 10^{-2}}\)
= 200Hz
The fundamental frequency of vibration of a sonometer wire may be halved by
doubling the length of the wire
doubling the mass of the wire
reducing the tension by half
reducing the absolute temperature by half
Correct answer is A
F \(\alpha\) \(\frac{1}{L}\)