According to De-Broglie, the waves are associated with

Options

A. moving neutral particles only.
B. moving charged particle only
C. electrons only
D. all moving matter particles

Answer

### Step-by-Step Solution:

1. **Understanding De Broglie's Hypothesis**:
- De Broglie proposed that all matter has wave-like properties. This means that not only light exhibits wave characteristics, but all particles do as well.

2. **De Broglie Wavelength Formula**:
- The relationship between the wavelength (λ) and momentum (p) of a particle is given by the formula:
\[ \lambda = \frac{h}{p} \]
- Where \( h \) is Planck's constant and \( p \) is the momentum of the particle.

3. **Momentum Definition**:
- The momentum \( p \) of a particle is defined as:
\[ p = mv \]
- Here, \( m \) is the mass of the particle and \( v \) is its velocity.

4. **Application to Different Particles**:
- Since the formula involves mass and velocity, it indicates that any particle with mass that is in motion will have an associated de Broglie wavelength.
- This includes all matter particles, whether they are neutral (like neutrons) or charged (like electrons).

5. **Observations Based on Mass**:
- For particles with a large mass (like humans), the de Broglie wavelength is very small and not observable.
- For subatomic particles (like electrons and protons), which have much smaller mass, the de Broglie wavelength is significant and can be observed.

6. **Conclusion**:
- Therefore, according to de Broglie, waves are associated with **all moving matter particles**.

### Final Answer:
According to De-Broglie, the waves are associated with **all moving matter particles**.

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