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.
3333 x 10-8cm
5000 x 10-8cm
6666 x10-8cm
750010-8cm
Correct answer is A
n = \(\frac{\text{wavelength in space}}{\text{wavelength in glass}}\)
1.5 = \(\frac{5000 \times 10^{-8}}{\lambda g}\)
\(\lambda\)g = 3333 x 10-8cm
10Hz
20Hz
1000Hz
5780Hz
Correct answer is C
\(\lambda\) = 2L
2 x 17 = 34cm
F = \(\frac{V}{\lambda}\)
= \(\frac{340}{34 \times 10^{-2}}\)
= 1000Hz
\(\frac{1}{\sqrt2}\)
\(\frac{1}{2}\)
\(\sqrt2\)
2
Correct answer is A
\(\frac{F_1}{F_2}\) = \(\sqrt{\frac{T_1}{T_2}}\)
\(T_2 = 2T_1\)
\(\frac{F_1}{F_2}\) = \(\sqrt{\frac{T_1}{2T_1}}\)
\(\frac{F_1}{F_2}\) = \(\sqrt2\)
F\(_2\) : F\(_1\) = 1 : \(\sqrt{2}\)
\(\frac{F_2}{F_1}\) = \(\frac{1}{\sqrt2}\)
27ms-1
54ms-1
90ms-1
108ms-1
Correct answer is B
No explanation has been provided for this answer.
From the kinetic theory of gases, temperature is a
form of energy and is proportional to the total kinetic energy of the molecules
form of energy and is proportional to the average kinetic energy of the molecules
physical property and is proportional to the total kinetic energy of the molecules
physical property and is proportional to the average kinetic energy of the molecules
Correct answer is D
No explanation has been provided for this answer.