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.
Which of the following electromagnetic waves has the shortest wavelength?
Radio waves
X-rays
Infra-red
Blue light
Ultraviolet
Correct answer is B
No explanation has been provided for this answer.
0.0cm3
2.0cm3
1.6cm3
0.625cm3
0.5cm3
Correct answer is E
At constant temperature P1V1 = P2V2
P2 = P1 + 40
= 10 + 40 = 50m
10 x 2.5 = 50 x V2
V2 = 0.5cm3
Which of the following statements is true? The frequency of a vibrating string is
proportional to its length
inversely proportional to the tension within it
proportional to the aptitude of vibration
inversely proportional to its cross-section
proportional to the square root of the tension within it
Correct answer is E
No explanation has been provided for this answer.
twice the e.m.f of the accumulator
less than the e.m.f by the potential drop across the resistor
zero
the same as the e.m.f.
greater than
Correct answer is E
In D.C circuit,
Xc = infinity
therefore, Vc = infinity
the thick tumbler is less likely to crack because it is stronger
the thick tumbler is less likely to crack because it insulates the heat better, glass being a poor conductor of heat
Both tumblers are equally likely to crack because they are made of the same kind of glass
the thick tumbler is more likely to crack because uneven expansion persists for a longer time within the thicker glass
the thick tumbler is more likely to crack because it is heavier
Correct answer is D
Usually, when pour water into a glass, the more thick glass is easier to break. Because the glass tumbler is cold, when hot water is poured, and the inner wall expands rapidly due to thermal expansion and contraction.