SAT Subject Physics Quiz

A charged particle at rest in a magnetic field experiences:

• A force proportional to its charge
• A force proportional to the field strength
• No force at all
• A force that depends on its mass

In the scenario with a stationary observer and a moving car, why might there be a discrepancy in force observations?

• The magnetic field changes strength
• Relativity of motion affects velocity measurements
• The charge of the particle changes
• The car's motion creates an electric field

Which of the following is NOT an example of a mechanical wave?

• Sound waves in air
• Ocean waves
• Seismic waves
• Radio waves

What distinguishes electromagnetic waves from mechanical waves?

• Electromagnetic waves are always transverse
• Electromagnetic waves can travel through a vacuum
• Electromagnetic waves always have higher frequencies
• Electromagnetic waves always travel faster

In a transverse wave, the direction of vibration is:

• Parallel to the direction of wave propagation
• Perpendicular to the direction of wave propagation
• At a 45° angle to the direction of wave propagation
• Random and unpredictable

If the wavelength of a wave doubles and its frequency is halved, how does its speed change?

• It remains the same
• It doubles
• It halves
• It quadruples

What is the relationship between a wave's period (T) and its frequency (f)?

• T = f
• T = 1/f
• T = f²
• T = √f

If a wave's speed is tripled and its wavelength is doubled, how does its frequency change?

• It increases by a factor of 1.5
• It decreases by a factor of 1.5
• It increases by a factor of 6
• It decreases by a factor of 6

Which property of a sound wave determines its perceived pitch?

• Amplitude
• Wavelength
• Frequency
• Speed

Why does sound travel faster in water than in air?

• Water molecules are smaller
• Water is denser
• Water has a higher refractive index
• Water conducts electricity better