Question
Question: 4 loops are formed in 80 cm of wire. Then the wavelength of wave is...
4 loops are formed in 80 cm of wire. Then the wavelength of wave is
A
20 cm
B
80 cm
C
160 cm
D
40 cm
Answer
20 cm
Explanation
Solution
The total length of the wire is 80 cm and it is used to form 4 identical circular loops.
The circumference of 1 loop = Total length / Number of loops = 80 cm / 4 = 20 cm.
Since the wavelength of the wave is taken as the length corresponding to one complete loop, the wavelength is 20 cm.