magnetization by induction
electric charges by induction
electric charges by conduction
electric charges by friction
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements about sound wave is not correct? Sound waves can be
reflected
refracted
diffracted
polarized
Correct answer is D
No explanation has been provided for this answer.
an echo
resonance
interference
reverberation
Correct answer is B
No explanation has been provided for this answer.
i and ii only
ii and iii only
i and iii only
i, ii and iii
Correct answer is A
No explanation has been provided for this answer.
\(\frac{d}{n}\)
dn
\(\frac{d}{n - 2}\)
\(\frac{d(n - 1)}{n}\)
Correct answer is A
n = \(\frac{R.d}{A.d}\)
R.d = \(\frac{R.d}{n} = \frac{d}{n}\)