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.
momentum of the air molecules are increased
volume occupied by the molecules are increased
frequency of collision of the air molecules with the walls of the pump is increased
more air molecules are collidin with one another in the system
Correct answer is C
No explanation has been provided for this answer.
53.0N
21.0N
7.0N
5.0N
Correct answer is D
Vertical resultant = 10 - 6 = 4N
Horizontal resultant = 20 - 17 = 3N
R = \(\sqrt{3^2 + 4^2}\)
= 5N
2.4ms-2
5.6ms-2
8.0ms-2
2.4ms2
Correct answer is B
F + Ma = P
a = \(\frac{P - F}{m}\)
= \(\frac{40 - 12}{5} = 5.6ms^{-2}\)
Which of the following phenomena supports the theory that waves have a particle nature?
electron diffraction
photoelectric effect
diffraction of light
x-ray interference
Correct answer is B
The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons.
Which of the following statements about the use of radioisotopes is not correct? They are used to
induce mutations in plants and animals to obtain new and improved varieties
trace the paths of metabolic processes in plants and animals
estimate the age of rocks
locate broken bones
Correct answer is A
No explanation has been provided for this answer.