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.
35mm
35.0mm
35.00mm
35.01mm
Correct answer is A
No explanation has been provided for this answer.
\(\frac{N}{8}\)
\(\frac{3N}{8}\)
\(\frac{5N}{8}\)
\(\frac{7N}{8}\)
Correct answer is D
N \(\to\) \(\frac{N}{2}\) \(\to\) \(\frac{N}{4}\) \(\to\) \(\frac{N}{8}\)
Number of atoms left = 1-1/8=\(\frac{7N}{8}\)
Isotopes are nuclei which have
the same number of nuetrons and electrons
equal number of electrons and protons
the same atomic number but different number of neutrons
the same number of total particles
Correct answer is C
No explanation has been provided for this answer.
Which of the following statements is TRUE of photoelectric effect?
it cannot occur in liquids
the energy of the emitted electrons is independent of the work function of the surface
the energy of the emitted electron depends on the wavelength of the incident light
the greater the intensity of the incuident light, the greater the incident of the emitted electron
Correct answer is C
The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material.
The frequency of the incident light on the substance determines the kinetic energy of the emitted electrons.
The number of electrons emitted and the intensity of light incident are proportional to each other.
Fusion reaction
Fission reaction
Chain reaction
Radioactive decay
Correct answer is A
No explanation has been provided for this answer.