यदि कोई प्रकाश किरण किसी वक्र दर्पण पर किसी कोण पर टकराती है, तो परावर्तन कोण को निम्नलिखित में से किससे मापा जाता है?

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?