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.
6.67N
6.56N
7.5N
8.6N
Correct answer is A
F = (Gm1m2) ÷ r2
M1 = 1024Kg, M2 = 1027Kg , r = 102
(Note: the gravitational constant of G = \(6.67 × 10^{ 7ndash; 11}\) \( Nm^2/Kg^2 \)
F = \( (6.67 × 10^{– 11 + 24 + 27)} 10^40 = 6.67 × (10^40 ÷ 10^40)
= 6.67N
f = 6.67N
Mechanical energy
Stationary energy
Potential energy
Vibrational energy
Correct answer is C
Energy due to position T is potential energy (P.E)
Energy due to motion is kinetic energy (K.E)
III only
II & III only
I only
II, III & IV only
Correct answer is C
Simple pendulum does not depend on thermal expansion
Five alarms, Thermostat and Bimetallic thermometer are application of thermal expansion of solid
There is an explanation video available below.
A vector quantity can only be completely described when ……… and …………are mentioned.
Magnitude and motion
Magnitude and direction
Distance and specified displacement
Moment and momentum
Correct answer is B
A vector quantity has both magnitude and direction
There is an explanation video available below.
The resultant force of a couple is ………?
Infinity
Zero
One
Half
Correct answer is B
Note: moment of a couple = force × length (fL)
The tangential force is actingin an opposite direction alongside its length
i.e f1 L1 = f2L2
f2L2 − f1 L1 = 0(i.e Zero)
There is an explanation video available below.