Quiz on the Dual Nature of Light and Matter

What is the primary tool scientists use to study distant stars and solar systems?

• Light

• Magnetic fields

• Sound waves

• Gravitational waves

How does light differ from sound in terms of travel?

• Light requires a medium, sound does not

• Sound travels faster than light

• Light can travel without a medium, unlike sound

• Both require a medium to travel

What is the speed of light in a vacuum?

• 186 million m/s

• 300 million m/s

• 186,000 m/s

• 300,000 m/s

What phenomenon does light exhibit that allows it to be modeled as both a particle and a wave?

• Electromagnetic interference

• Wave-particle duality

• Quantum entanglement

• Photon emission

In the two-slit experiment, what pattern is observed when light behaves as a wave?

• Random distribution

• Vertical bands of interference

• Circular patterns

• Horizontal lines

What happens to the number of photons per square meter as the distance from the light source increases?

• It decreases

• It doubles

• It increases

• It remains constant

What law predicts the decrease in brightness with distance from a light source?

• Law of reflection

• Law of refraction

• Inverse square law

• Newton's first law

What is required for an electron in an atom to jump to a higher energy level?

• A magnetic field

• A change in temperature

• A specific amount of energy

• A decrease in energy

What is emitted when an electron returns to a lower energy level?

• Sound

• Heat

• Light

• Electricity

What type of spectrum is produced by excited hydrogen when passed through a prism?

• Continuous spectrum

• Emission spectrum

• Line spectrum

• Absorption spectrum