मानव आँख का कौन सा भाग मुख्य रूप से रेटिना पर प्रकाश को सटीक रूप से केंद्रित करने के लिए अपनी फोकस दूरी को समायोजित करने के लिए जिम्मेदार होता है?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?