| \(Leaders\) | \(Contribution\) |
|---|---|
| (a) Sardar Patel | Hindustan Socialist Republican Army |
| (b) Bhagat Singh | Swaraj Party |
| (c) C.R. Das | Bardoli Satyagraha |
| (d) Jawahar Lal Nehru | Oudh Kisan Sabha |
- Sardar Patel: Known for his role in the Bardoli Satyagraha, not the Hindustan Socialist Republican Army. (Incorrect)
- Bhagat Singh: A revolutionary freedom fighter, not associated with the Swaraj Party. (In-correct)
- C.R. Das: A key leader of the Swaraj Party, not related to the Bardoli Satyagraha. (Incorrect)
- Jawahar Lal Nehru: Played a significant role in national politics but not associated with the Oudh Kisan Sabha, which was led by others.(Correct)
In the adjoining figure, $\triangle CAB$ is a right triangle, right angled at A and $AD \perp BC$. Prove that $\triangle ADB \sim \triangle CDA$. Further, if $BC = 10$ cm and $CD = 2$ cm, find the length of AD. 