Pressure

1.      The force acting normally per unit area on the surface of the body is known as

• pressure

• power

• stress

• strain

2.      In SI units, the unit of pressure is

• newton

• Pa

• pi

• omega

3. The pressure is defined as the force acting per unit

• volume

• mass

• density

• area

4. We can calculate pressure ‘P’ by the formula

• area / force

• force / area

• force + area

• force × area

5.      1 newton per meter square (Nm^-2) is equal to

• 1 J

• 1 N

• 1 kg

• 1 Pa

6.      Why does a nail have a pointed tip?

• The force acting on a smaller area exerts a smaller pressure

• The force acting on a larger area exerts a zero pressure

• The force acting on a smaller area exerts a larger pressure

• The force acting on a larger area exerts a larger pressure

7.      The pressure exerted by man on the earth is minimum when he  ______

• Stands on his feet

• Stands on one foot

• Sits with folded legs

• Sleep on the ground

What is the equation used to calculate pressure?

• pressure= force/mass
• pressure =mass/volume
• pressure=area/force
• pressure=force/area

What pressure does a 4000N horse exert on the ground if each foot is 10cm²?

• 40 N/cm²
• 100 N/cm²
• 400 N/cm²
• 10 N/cm²

Pressure decreases when the surface area over which a force is applied increases

• True
• False