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.
The principle of transmissibility of pressure in a fluid at rest in all directions is known as
Archimede's principle
Flotation Principle
Newton's law
Pascal's law
Boyle's law
Correct answer is D
- Discovered by Frenchman Blaise Pascal, Pascal's law states that pressure applied anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid.
The following types of waves are transverse EXCEPT
light waves
radio waves
sound waves
surface waves on water
X-rays
Correct answer is C
No explanation has been provided for this answer.
The latent heat of fusion of a substance is the heat required to
raise the temperature of unit mass of the substance by 1 oC
maintain unit mass of the substance at constant temperature
change unit mass of substance from solid to liquid at constant temperature
change unit mass of liquid to vapour at constant temperature
raise the temperature of unit mass by 100oC
Correct answer is C
No explanation has been provided for this answer.
A vapour is said to be saturated when?
more molecules return to the liquid than leave it
a dynamic equilibrium exists between the liquid molecules and the vapour molecules at a given temperature
the vapour pressure is atmospheric
the temperature of the vapour varies
all molecules are moving with the same speed
Correct answer is B
A vapor saturated is said to be in a dynamic equilibrium with its own liquid
32oC
48oC
56oC
65oC
75oC
Correct answer is C
steam point - ice point in oC = 100oC - 0oC
= 1.9cm - 3cm = 16cm
12cm = 3cm = 9cm
\(\frac{9}{16}\) x 100oC = 56.25oC
= 56oC