science
Grade-4-
Easy

Question

If the rope is moved up and down slowly, the distance between the crests will _____, so the wavelength will _________.

  1. Increase, decrease
  2. Decrease, increase
  3. Decrease, decrease
  4. Increase, increase

hintHint:

Distance between the crests will be more.

The correct answer is: Increase, increase


    • If we move the rope slowly it will decrease the frequency.
    • And frequency and wavelength are inversely proportional to each other.
    • Therefore, if the rope is moved up and down slowly, the distance between the crests will increase, so the wavelength will increase.
    • So, the correct option is d.

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