Advertisements
Advertisements
प्रश्न
Tick the most appropriate answer.
The force applied on a machine to do work is called the
पर्याय
load
effort
efficiency
fulcrum
Advertisements
उत्तर
effort
APPEARS IN
संबंधित प्रश्न
Fill in the blank
An electric fan converts electrical energy into ______ energy.
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
Select the correct alternatives
The correct statement is
What is potential energy ? State its unit.
Match the following:
| Column A | Column B |
| (a) Needle | (1) class II lever |
| (b) Doorknob | (2) inclined plane |
| (c) Ramp | (3) Class I lever |
| (d) Lemon crusher | (4) Wheel and axle |
| (e) Seesaw | (5) wedge |
Derive the relation between commercial unit of energy (kWh) and SI unit of energy (joule).
We make useful objects from a variety of substances. Another use of substances is that we get energy from some of them.
There is a car. Its tank is full of fuel but it does not move. Why is that?
Which one of the following requires wind energy?
What energy transfer happen in a car engine?
Which one of the following is not the unit of energy?
