Other questions in this quiz

2. A spectrum has frequencies varying from 22Hz to 48Hz. what is the bandwidth?

  • 26Hz
  • 80Hz
  • -26Hz
  • 44Hz

3. A boat takes 6 seconds to rise and fall. The difference in height between the boat at its lowest and highest point is 1.2m and wave pass it at 3ms-1. how long are the waves?

  • 18
  • 2
  • 3.6
  • 7.2

4. what is the equation for power?

  • c/f
  • 1/f
  • lambda X f
  • 1/lambda

5. how do you improve contrast?

  • median
  • multiplying
  • adding
  • laplace rule

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