Other questions in this quiz

2. Why is voltage induced when a wire is moved through a magnetic field?

  • Field lines are being cut
  • the current increases

3. According to the Big Bang Theory,what is the composition of the universe?

  • Hydrogen ( approx 75%) and helium ( approx 25%) and small quantities of light elements
  • Hydrogen ( approx 35%) and helium ( approx 65%) and small quantities of light elements

4. Define transverse waves

  • Vibrations are at 90 degrees to the direction of wave motion
  • Vibrations are at 45 degrees to the direction of wave motion

5. When a light ay enters a glass block why does it change direction?

  • The light ray slows down- it is refracted
  • The light ray speeds up- it is refracted

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