CBSE Worksheet for Chapter - 2 Pressure Class 8

CBSE Worksheet for Chapter - 2 Pressure Class 8

Worksheets For class 8

Find CBSE Worksheet for chapter-2 Pressure class 8

1. CLASS-8
2. BOARD: CBSE
3. PHYSICS Worksheet - 2
4. TOPIC: Force
5. For other CBSE Worksheet for class 8 Science check out main page of Physics Wallah.

SUMMARY

• Introduction, Pressure, Units of Pressure
• Atmospheric pressure – Measurement, Variation with altitude, Need of atmospheric pressure
• Pressure exerted by fluids(liquids & gases), Applications of atmospheric pressure
• Manometer, Pascal’s law

SECTION 1 – OBJECTIVE

1. The S.I unit of pressure is:
   1. Newton
   2. Dyne/cm ²
   3. Pascal
   4. Joule
2. Pressure in solids:
   1. Increases with increase in area of cross section
   2. Increases with decrease in area of cross section
   3. Is independent of area of cross section
   4. None of these
3. For a fixed area of contact, the pressure exerted:
   1. Increases with increase in force
   2. Increases with decrease in force
   3. Is independent of force
   4. None of these
4. Sharper knives cut fruits easily because:
   1. The area of contact is more
   2. The area of contact is less
   3. It shines more
   4. None of these
5. A force of 50N is applied normally on a table top of area 2m ² . Then the pressure exerted on the table top is:
   1. 25Nm ^-2
   2. 50Nm ^-2
   3. 10Nm ^-2
   4. 100Nm ^-2
6. Atmospheric pressure is measured by:
   1. Barometer
   2. Manometer
   3. Screw gauge
   4. None of these
7. A vacuum cleaner works on the principle of:
   1. Electromagnetic induction
   2. Suction
   3. Mutual induction
   4. Energy conservation
8. The pressure of sea water is maximum at:
   1. The bottom of the sea
   2. The top of the sea
   3. Half way the depth of the sea
   4. Is same everywhere
9. Water flows through three holes made at different heights of a vessel. The pressure is maximum at :
   1. The topmost hole
   2. The middle hole
   3. The lowermost hole
   4. Is same at all holes
10. Weight put on piston at one end of a U-tube filled with water
    1. Makes the piston at the other end of the U-tube to rise
    2. Makes the piston at the other end of the U-tube to fall
    3. Makes no change in the position of the piston at the other end of the U-tube
    4. None of these

SECTION 2 – SUBJECTIVE

1. Define pressure and write its S.I. unit.
2. A camel can move fast on sand but we can’t. Give reason
3. State Pascal’s law. Mention any 2 uses of it.
4. Explain pressure in liquids with suitable examples
5. Write two applications of pressure in our daily life
6. What is manometer? Describe its construction
7. If the pressure produced by a force over an area of 100cm ² is 30Pa, then calculate the force applied.

Solutions: to worksheet-2 Topic- Pressure

objective

Subjective

7. F = 0.3N