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.
The inner diameter of a test tube can be measured accurately using a?
micrometer screw gauge
pair of dividers
meter rule
pair of vernier calipers
Correct answer is D
Vernier calipers are also used to measure the internal and external diameters of a tube
beta rays
gamma rays
x-rays
ultra-violet rays
Correct answer is A
Both the electric field and magnetic field affect the β-particles.
24 years
20 years
10 years
2 years
Correct answer is B
Given amount remaining = \(\frac{1}{64}\)
= \(\frac{1}{64} = \frac{1}{(2)^{6}}\)
\(\therefore\) = \(\frac{120 \text {years}}{6}\) = 20 years
\(\Rightarrow\) T\(\frac{1}{2}\) = 20 years
6630.0V
663.0V
66.3V
6.6V
Correct answer is C
Given f = 1.6 x10\(^{16}\)H\(_{3}\), h = 6.63 x 10\(^{-39}\)Js
e = 1.6 x 10\(^{-19}\)C, V = ?
V = \(\frac{w}{e} = \frac{hf}{e}\) = \(\frac{1.6 \times 10^{16} \times 6.63 \times 10^{34}}{1.6 \times 10^{-19}}\)
= 66.3V
30V
40V
50V
70V
Correct answer is B
AT resonance; X\(_{L}\) = X\(_{c}\)
\(\therefore\) = V\(_{L}\) = V\(_{c}\) = 40V