Tag: physics

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Questions Related to physics

Multiple choice physics some natural phenomena safety from lightning lightning safety advanced of lightning

Other than lightning conductor, what are the objects which indirectly protect building from lightning / thunderstorm?

  1. Metal column used during construction.

  2. Electrical wires in the building.

  3. Water piper in the building.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The metal columns used during construction, electrical wires and water pipes, all are good conductor and well earthed hence provide earthing to the building.

Multiple choice physics some natural phenomena safety from lightning lightning safety advanced of lightning

Why it is not recommended to touch water metal-pipe lines, electric wires during thunderstorm?

  1. They are good conductors thus may carry charges.

  2. They are insulators and never carry charges.

  3. They may store charges.

  4. This is a myth.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Metal pipe-lines for carrying water and electrical wires are good conductors and carry charges. If a lightning strikes the building, there may be chance of electric shocks getting spread through those due to leakage and this could be dangerous for life.

Multiple choice physics some natural phenomena safety from lightning lightning safety advanced of lightning

How lightning conductor is installed during construction of building?

  1. By keeping one end of rod open to air and another end of the rod buried deep in the ground.

  2. By keeping one end of rod closed and other end is buried deep in the ground.

  3. By keeping one end of rod open to air and other end is just touching the ground.

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A lightning conductor works by providing a low-resistance path for lightning to travel safely to the ground. This requires a metallic rod at the top of the building connected to a conductor that is buried deep in the earth.

Multiple choice physics some natural phenomena safety from lightning lightning safety advanced of lightning

Why shouldn't one stand under a tree or a tall building during a thunderstorm?

  1. Lightning can strike trees and buildings,

  2. Trees and buildings may fall causing damage,

  3. Trees and buildings do not offer enough escape ground,

  4. None of the above,
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sometimes electric discharge can take place between the charged cloud and Earth. While passing over a tree or a tall building an opposite charge may be induced causing a lightning to strike the tree or a building and if the charge is large it may cause severe damage and may prove to be fatal. Thus, it is advised to stay away from tall buildings or tree during thunderstorms.

Multiple choice physics some natural phenomena safety from lightning lightning safety advanced of lightning

How can we be safe when there is occurrence of lightning?

  1. Taking shelter under building or house

  2. When travelling through car or bus, making sure windows and doors are shut

  3. If in forest, taking shelter under short trees

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

During lightning, we can be safe:

  • by taking shelter under buildings.
  • by ensuring that windows and doors of a car are shut while travelling in a car / bus.
  • by taking shelter under short trees while in forest.