Physics SS2

A metal rod of length 2 m expands by 0.2 cm when heated through 100°C. What is the linear expansivity of the metal?

• 1 × 10⁻⁵ K⁻¹

• 1 × 10⁻⁴ K⁻¹

• 2 × 10⁻⁵ K⁻¹

• 2 × 10⁻⁴ K⁻¹

Which law states that an object continues in its state of rest or uniform motion unless acted on by an external force?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Hooke’s Law

A 5 kg object is acted upon by a force of 20 N. What is its acceleration?

• 2 m/s²

• 4 m/s²

• 5 m/s²

• 10 m/s²

A body moving at 10 m/s comes to rest in 5 s. What is the retardation?

• 1 m/s²

• 2 m/s²

• 5 m/s²

• 10 m/s²

What kind of wave requires a medium to travel?

• Transverse

• Longitudinal

• Electromagnetic

• Matter wave

Which device uses the expansion of liquid to measure temperature?

• Thermometer

• Hydrometer

• Barometer

• Manometer

What is the formula for heat energy?

• Q = mcΔT

• Q = mL

• Q = I²Rt

• Q = VIt

A force of 200 N is applied to move a load of 1000 N. What is the mechanical advantage?

• 2

• 3

• 4

• 5

Which of the following is not a simple machine?

• Lever

• Pulley

• Inclined plane

• Transformer

A block of ice at 0°C is converted to water at 0°C. What type of heat is involved?

• Sensible heat

• Latent heat

• Specific heat

• Internal heat