Sara's Physics Quiz Class 3

What can a force cause in a body?

• Change in color

• Change in size

• Change in temperature

• Change in taste

Which of the following is not a type of force mentioned?

• Thermal

• Magnetic

• Gravitational

• Electric

How is weight calculated?

• Weight = mass x acceleration

• Weight = force x distance

• Weight = mass x gravitational field strength

• Weight = volume x density

What is the unit of moment of a force?

• Joule

• Newton

• Watt

• Newton meter

What principle is applied in situations where forces are in equilibrium?

• Principle of moments

• Principle of inertia

• Principle of acceleration

• Principle of energy

What is the fulcrum in a lever?

• Output force

• Axis about which the object turns

• Effort

• Load

What is the benefit of some levers?

• Effort is equal to load

• Effort is less than load

• Load is greater than effort

• Effort is opposite to load

What is used to find the centre of gravity of a lamina?

• Ruler

• Compass

• Plumbline

• Protractor

How does the orientation of an object affect its stability?

• It increases stability

• It has no effect

• It depends on the object

• It decreases stability

Which object is used to compare stability in different positions?

• Cube

• Sphere

• Pyramid

• Cylinder