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.
Total internal reflection will not occur when light travels from
water to air
water into glass
glass to air
glass into water
Correct answer is B
No explanation has been provided for this answer.
0o
45o
90o
180o
Correct answer is A
No explanation has been provided for this answer.
0.05m
0.15m
0.30m
1.00m
Correct answer is A
\(h_i = \frac{h_o \times V}{u}\)
\(h_i = \frac{1.5 \times 0.1}{3}\)
= 0.05m
If a sonometer has a fundamental frequency of 450HZ, what is the frequency of the fifth overtone?
2700Hz
456Hz
444Hz
75Hz
Correct answer is A
5th Overtone = 6fo = 6 x 450 = 2700Hz
What is the velocity of sound at 100 oC if the velocity of sound at 0 oC is 340ms -1?
497m-1
440m-1
397m-1
240m-1
Correct answer is C
\(V \propto \sqrt{T}\)
⇒ \(\frac{V_{1}}{\sqrt{T_{1}}} = \frac{V_{2}}{\sqrt{T_{2}}}\)
Using the above formula, we get
\(V_{2} \approxeq 397ms^{-1}\)