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.
Which of the following is used to determine the relative density of the acid in a car battery?
Hypsometer
Hygrometer
Manometer
Hydrometer
Spectrometer
Correct answer is D
No explanation has been provided for this answer.
2√3 N
4 N
4√3 N
8 N
2 N
Correct answer is A
F = 4 x sin 60o
F = 4 x √3/2 = 2√3 N
Which of the following is not a consequence of a force field?
wieght
surface tension
gravitational pull
magnetic force
electric force
Correct answer is B
No explanation has been provided for this answer.
4 : 1
2 : 1
1 : 1
1 : 2
1 : 4
Correct answer is A
Given that a mass N of elements A and B exists, then:
For element A, after 100 years, we have A of mass N/2 remaining
After 200 years, we have A of mass \(\frac{1}{2}\times\frac{N}{2}\) = \(\frac{N}{4}\)
For element B, after 50 years, we have B of mass N/2 remaining
After 100 years, we have B of mass \(\frac{1}{2}\times\frac{N}{2}\) = \(\frac{N}{4}\)
After 150 years, we have B of mass \(\frac{1}{2}\times\frac{N}{4}\) = \(\frac{N}{8}\)
After 200 years,we have B of mass \(\frac{1}{2}\times\frac{N}{8}\) = \(\frac{N}{16}\)
Ratio: \((\frac{N}{4} : \frac{N}{16})\)
=\(4 : 16\) = \(1 : 4\)
Which of the following is not an electromagnetic radiation?
X-ray
Radio waves
Sunlight
Sound waves
Infra-red radiation
Correct answer is D
No explanation has been provided for this answer.