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
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
What do you mean by conservation of mechanical energy? State the condition when does it hold.
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.
Define the term 'watt'.
How many joules are there in one kilowatt-hour?
Can you tell?
What should be taken into account for measuring work?
Observe the picture and put a tick (✓) if work is done and put a cross (x) if work is not done.
 |
 |
 |
 |
 |
 |
The work done on an object does not depend upon the
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?
