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.
Which of the following waves is both transverse and mechanical?
Water waves
Radio waves
Sound waves
X-rays
Correct answer is A
No explanation has been provided for this answer.
A radioactive isotope has a decay constant of 10-6s-1.
Calculate its half - life?
5.93 x 106s
6.93 x 105s
6.93 x 109s
5.93 x 107s
Correct answer is B
t1/2 = 0.693γ = 0.69310−6
= 6.93 x 105
Which of the following electromagnetic waves has the shortest wavelength?
Visible Light
Ultraviolet rays
Infrared rays
Gamma rays
Correct answer is D
No explanation has been provided for this answer.
40s
10s
20s
5s
Correct answer is B
t = v−ua = 20−02
= 10s
30s
20s
25s
15s
Correct answer is D
The total time of flight is given as
T=2usinθg
Hence, time to maximum height is half of the total time of flight,
t = usinθg
= 300sin3010 = 15s