Bohr's Model: Dual Character of Electromagnetic Radiation

According to Bohr's model and modern physics principles, electromagnetic radiation possesses a fundamental property known as wave-particle duality. This means it exhibits characteristics of both waves and particles, depending on the phenomenon being observed.

• Wave Nature: Radiation shows wave-like behaviors such as diffraction and interference.
• Particle Nature: Radiation also behaves like discrete packets of energy called photons, demonstrated by effects like the photoelectric effect.

Therefore, electromagnetic radiation behaves like waves and particles.

Identifying Dual Character Properties

Analyzing the options provided:

• Option 1 incorrectly pairs sound (a mechanical wave) with waves.
• Option 2 correctly identifies the dual character as waves and particles.
• Option 3 mentions mass and magnetic effect, which are properties but not the core dual character.
• Option 4 incorrectly pairs waves with electrons (which are particles).

The concept central to Bohr's understanding and quantum mechanics is the wave-particle duality of electromagnetic radiation.