Advertisements
Advertisements
प्रश्न
It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.
विकल्प
True
False
Advertisements
उत्तर
False.
It is not easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.
APPEARS IN
संबंधित प्रश्न
The unit of thrust is
Name two factors on which the pressure on a surface depends.
It is easier to cut with a sharp knife than with a blunt one. Explain.
A gum bottle rests on its base. If it is placed upside down, how does the thrust change?
How much thrust will be required to exert a pressure of 20,000 Pa on an area of 1 cm2.
Multiple Choice Question.
A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross-section of piston carrying the load is 2.25 × 10-2 m2. What is the maximum pressure the smaller piston would have to bear?
At higher altitudes, atmospheric pressure is ______.
What is the SI unit of pressure?
Assertion (A): Wide wooden sleepers are kept below railway lines to reduce pressure on the railway tracks and prevent them from sinking into the ground.
Reason (R): Pressure is directly proportional to the area in which it is acting.
Pressure is a scalar quantity because ______.
- it is the ratio of force to area and both force and area are vectors.
- it is the ratio of the magnitude of the force to area.
- it is the ratio of the component of the force normal to the area.
- it does not depend on the size of the area chosen.
