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.
5:3
1:50
50:1
3:5
No Correct Option
Correct answer is E
No explanation has been provided for this answer.
In an A.C circuit, the ratio of r.m.s value to peak value of current is
2
\( \frac{1}{2} \)
\( \frac{1}{\sqrt{2}} \)
\( \sqrt{2} \)
Correct answer is C
Irms = \( \frac{I_0}{\sqrt{2}} \)
\( \text{Therefore } \sqrt{2Irms} = I_0 \\
\frac{Irms}{I_0} = \frac{1}{\sqrt{2}} \)
Graham's Law
Boyle's Law
Pressure law
Charles Law
No Correct Option
Correct answer is E
Rate of diffusion is inversely proportional to the square root of density - Graham's law
\( P \propto \frac{1}{v} \) at constant temperature - Boyle's law
\( P \propto T \) at constant volume - Pressure law
\( P \propto T \) at constant pressure - Charles law
therefore no correct option
215 and 88
91 and 227
227 and 91
92 and 238
Correct answer is C
- Alpha radiation consists of helium- He\(^{4}_{2}\)
2 Alpha decay --> 2 X He\(^{4}_{2}\) = Element\(^{8}_{4}\)
- Beta particles are high energy electrons- e\(^{0}_{-1}\)
3 Beta particles --> 3 X e\(^{0}_{-1}\) = Element\(^{0}_{-3}\)
- Gamma rays are waves of electromagnetic energy, or photons.
the mass and atomic number of the resulting element = U\(^{235}_{92}\) - Elements( \(^{8}_{4}\) + \(^{0}_{-3}\) )
--> Element\(^{227}_{91}\)
An object is weighed at different locations on the Earth. What will be the right observation?
Both the mass and weight vary
The weight is constant while the mass varies
The mass is constant while the weight varies
Both the mass and weight are constant​
Correct answer is C
No explanation has been provided for this answer.