Olympiad – Class VIII – Science - Phy - Some Natural Phenomena

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Question - 1

What is the force present between two charged bodies called?

  • A Electrostatic force
  • B Electromagnetic force
  • C Gravitational force
  • D Frictional force

Question - 2

What happens when two bodies are rubbed against each other?

  • A They acquire equal and similar charges
  • B They acquire equal and opposite charges.
  • C They acquire different charges but in different amounts depending upon their masses
  • D They do not acquire

Question - 3

 Suppose you are in a car and there is a thunderstorm. Which of the following is the best way to protect yourself from possible harm?

  • A Remaining in the car
  • B Getting out of the car and taking cover under the car
  • C Running to a nearby tree
  • D Getting out and standing under an electric pole

Question - 4

What is the 5.1.unit of electric charge

  • A Coulomb
  • B Ampere
  • C Volt
  • D Watt

Question - 5

What happens when an ebonite rod rubbed with fur and a glass rod rubbed with silk are brought near each other?

  • A They attract each other
  • B They repel each other.
  • C Nothing happens to them.
  • D They acquire he

Question - 6

What are lightning rods made up of?

  • A Copper
  • B Plastic
  • C Bakelite
  • D Sand paper

Question - 7

What is the purpose of an electroscope?

  • A To detect and test small electric charges
  • B To calculate the amount of electric charge flowing through the conductor
  • C To find out the presence of antimatter
  • D To test the presence of magnetic field

Question - 8

Why is a lightning conductor installed on a building?

  • A So that it collects the electric power present in the lightning
  • B So that it repels the lightning that falls on the building
  • C So that it forces the lightning to fall in an area where there are no buildings
  • D So that it conducts electric charge to the ground when lightning strikes the building

Question - 9

What happens when a glass rod is rubbed with silk cloth?

  • A Electrons are added to it
  • B Electrons are removed from
  • C Protons are added to it.
  • D Protons are removed from it

Question - 10

When you touch a charged body, the charge flows through you into the earth. What is this called?

  • A Induction
  • B Conduction
  • C Capacitance
  • D Earthing