Question : In 1830, which American scientist created the world's most powerful electromagnet, the Albany magnet, which could lift to 750 pounds of metal at a time?

Option 1: John Cockcroft

Option 2: William Gilbert

Option 3: Joseph Henry

Option 4: Edward Mills Purcell

Question : Who founded the value of 'G'?

Option 1: Henry Cavendish

Option 2: Michael Faraday

Option 3: Isaac Newton

Option 4: Marie Curie

Question : Which pioneer scientist used radio waves to transmit signals over distances of several kilometres in the 1890s?

Option 1: Michael Faraday

Option 2: Paul Langevin

Option 3: Guglielmo Marconi

Option 4: Pierre Weiss

Question : Observing the motion of objects on an inclined plane______deduced that objects move with a constant speed when no force acts on them.

Option 1: Michael Faraday

Option 2: Johannes Kepler

Option 3: Galileo

Option 4: Archimedes

Question : Select the option that expresses the given sentence in reported speech.
The teacher says, “Every action has an equal and opposite reaction.”

Option 1: The teacher says every action had an equal and opposite reaction.

Option 2: The teacher said that every action had an equal and opposite reaction.

Option 3: The teacher said that every action has an equal and opposite reaction.

Option 4: The teacher says that every action has an equal and opposite reaction