Physics - Study Mode

[#296] If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is
Correct Answer

(D) 500 J

Explanation

Solution: distance of trolley S = 10m force F =50N work done = F. S =50×10 =500J

[#297] Necessary element of change in solar energy to electrical energy
Correct Answer

(B) Silicon

Explanation

Solution: Necessary element of change in solar energy to electrical energy Silicon.

[#298] In hydro power station, the motion produced in turbines is due to
Correct Answer

(A) Flow of water

Explanation

Solution: In hydel power station, the motion produced in turbines is due to flow of water.

[#299] The SI unit for measuring work and energy is
Correct Answer

(A) Joule

Explanation

Solution: The SI unit for measuring work and energy is Joule.

[#300] In a rechargeable cell what kind of energy is stored within the cell?
Correct Answer

(C) Chemical energy

Explanation

Solution: Electric energy is converted into chemical energy and stored it as chemical energy within the cells.