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 does NOT describe the Image formed by a plane minor?
Erect
Laterally inverted
Same distance from mirror as object
Magnified
Correct answer is D
The image formed by a plane mirror is always virtual (the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting.
Which of the following is not true of an electrical charge?
Positive charge means deficit electrons
Negative charge means excess of electrons
electric current means movement of electrons
All of the above
Correct answer is D
No explanation has been provided for this answer.
Natural radioactivity consists of the emission of
α- particles and β-rays
α- particles and X-rays
α- particles, β - rays and y-rays
γ- rays and X-rays
Correct answer is C
Radioactivity is the spontaneous emission of radiation from atomic nuclei. This radiation can consist of alpha, beta, and gamma radiation.
Which of the following is true of an electrical charge?
Positive charge means deficit electrons
Negative charge means excess of electrons
electric current means movement of electrons
All of the above
Correct answer is D
No explanation has been provided for this answer.
1360cm\(^3\)
600cm\(^3\)
240cm\(^3\)
8000m\(^3\)
Correct answer is B
\(Density= \frac{mass}{volume}\)
⇒ \(0.9gcm^{-3} = \frac{mass}{400cm^{3}} = 360g\)
without any loss in the frying process, we have
\(0.6gcm^{-3} = \frac{360g}{v}\)
\(v = \frac{360g}{0.6gcm^{-3}} = 600cm^{3}\)