एक खाली आयताकार गुहा अनुनादक (rectangular cavity resonator) की अनुनादी आवृत्ति (resonant frequency) 12 GHz है। यदि गुहा को आंशिक रूप से परावैद्युत सामग्री (εr = 2.25) से भरा जाता है, तो इसकी नई अनुनादी आवृत्ति लगभग कितनी होगी?

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?