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.
(i), (iii) and (iv) only
(i), (ii) and (iv) only
(ii), (iii) and (iv) only
(i), (ii) and (iii) only
Correct answer is B
Electrical conduction of gas is applied in:
(i) The identification of gases
(ii) Lighting/fluorescent tubes
(iii) Advertising industry/Neon signs
(iv) Cathode ray oscilloscope/T.V. tubes
The property of wave shown in the diagram above is?
Diffraction
Refraction
Polarisation
Interference
Correct answer is A
Diffraction is the bending of waves around the corners of an obstacle or through an aperture.
√3
\(\frac{√3}{2}\)
\(\frac{1}{√2}\)
\(\frac{1}{√3}\)
Correct answer is D
A body sliding down a plane inclined at 30o to the horizontal,
Has coefficient of friction = tan 30º or \(\frac{1}{√3}\)
The mercury column in the barometer at notational atmospheric pressure has a height of?
0.76 cm at see level
760 cm at sea level
7.6 cm at sea level
76 cm at sea level
Correct answer is D
The height of the mercury column serves as an indicator of atmospheric pressure. At sea level and at a temperature of 0° Celsius (C), the height of the mercury column is approximately 30 inches, or 76 centimeters. This represents a pressure of approximately 14.7 psia. The 30-inch column is used as a reference standard.
One of the following is a scalar quantity?
weight
momentum
potential energy
displacement
Correct answer is C
Examples of scalar quantities are mass, energy, distance, charge, volume, time, speed, and the magnitude of physical vectors in general