Advertisements
Advertisements
प्रश्न
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 |
Advertisements
उत्तर
| Column A | Column B |
| (a) Needle | (5) wedge |
| (b) Doorknob | (4) Wheel and axle |
| (c) Ramp | (2) inclined plane |
| (d) Lemon crusher | (1) class II lever |
| (e) Seesaw | (3) Class I lever |
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
Potential energy changes into kinetic energy when it is put to use
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
Answer the following in a word or two or in a sentence.
Write the formula for calculating the efficiency of a machine.
Name the commercial unit of measurement of energy.
Name two units of power bigger than watt.
What is the common name of '1 kWh' of electrical energy?
If the energy of a ball falling from a height of 10 metres is reduced by 40%, how high will it rebound?
The capacity that an object has for doing work is called ______.
When a body falls freely towards the earth, then its total energy
The weight of a person on planet A is about half that on the earth. He can jump up to 0.4 m in height on the surface of the earth. How high he can jump on planet A?
