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.
1, – 2, 1
1, 2, – 2
1, 1, –2
2, 2, 1
Correct answer is B
Work (w) = Force (f) × Distance (d)
Note: f = ma = mass × acceleration
= mass ×acceleration ×distance
= kg ×ms–2 × m
= kg m2 5–2
(Note: the dimension of kg = M, M = L & S = T)
Work = ML2 T–2 = Ma Lb Tc
i.e. Ma Lb Tc = as 1, b = 2, c = –2
The value of a, band c = 1, 2, –2
The compressed regions and the space-out regions in longitude wave are refers to as
Compression and Rarefaction
Comparison and Explosion
Reflection only
Refraction only
Correct answer is A
The vibrating particles behave like a spiral spring with a series of compression region and space–out region.
Radio waves belong to the class of wave whose velocity is about
34m/s
3 ×106m/s
3 ×108m/s
3 × 10-8m/s
Correct answer is C
A radio waves is an electromagnetic waves which travels with a constant velocity of 3 × 108m/s
A member of the crew of a SPACESHIP experiences weightlessness in a space when they
Fall freely from the earth’s gravitational field
Is walking on the planet
In between the sun and the earth
Holding anything in space is negative
Correct answer is A
Weightlessness:– The state of being free from the effects of gravity. (zero gravity)
318K
250K
184K
120K
Correct answer is A
Note: T = 273 + θ
θ = 45°
T = 273 + 45
= 318K