In inertial reference frame momentum of body always remain unchange .if extenal force is zero
B
Action reaction pair must be of same type & can not balance each other
C
If same force is acting on two different objects then their rate of change of momentum is same
D
Newton's third law is not applicable in intertial referecne frame.
Text Solution
AI Generated Solution
The correct Answer is:
To solve the question, we need to analyze the statements provided regarding Bohr's model of the atom and its implications for the spectra of hydrogen and deuterium.
### Step-by-Step Solution:
1. **Understanding the Elements**:
- Hydrogen (H) has one proton and no neutrons.
- Deuterium (D) is an isotope of hydrogen that has one proton and one neutron.
2. **Bohr's Model Basics**:
- Bohr's model describes the atom as having electrons orbiting a nucleus, with the force of attraction between the positively charged nucleus and the negatively charged electron being governed by Coulomb's law.
- The energy levels of the electron depend primarily on the charge of the nucleus and not on its mass.
3. **Charge and Mass Consideration**:
- Both hydrogen and deuterium have the same nuclear charge (+1e, where e is the elementary charge).
- The mass difference between hydrogen and deuterium (due to the presence of a neutron in deuterium) does not affect the energy levels of the electron in the context of Bohr's model.
4. **Spectra Analysis**:
- Since the energy levels are determined by the charge of the nucleus and not its mass, the spectral lines produced by transitions of electrons between these energy levels will be the same for both hydrogen and deuterium.
- Therefore, Bohr's model cannot differentiate between the spectra of hydrogen and deuterium.
5. **Conclusion**:
- Statement 1 is true: Bohr's model cannot differentiate between the spectra of hydrogen and deuterium.
- Statement 2 provides a correct explanation for Statement 1, as it discusses the reliance on nuclear charge rather than mass.
6. **Final Answer**:
- The correct choice is A: Statement 1 is true, and Statement 2 is the correct explanation for Statement 1.
