एक निश्चित द्रव से भरे समबाहु खोखले प्रिज्म द्वारा उत्पन्न न्यूनतम विचलन (minimum deviation) 30° पाया जाता है। इसके भीतर प्रकाश की किरण 30° के कोण पर अपवर्तित होती है। द्रव का अपवर्तनांक (refractive index) कितना है?

Which of the following events is considered a major turning point that fueled Indian nationalism during British rule due to its brutal nature and widespread condemnation?

Which of the following events is considered the first major peasant uprising against the British in India?

Who led the Non-Cooperation Movement in India?