विभिन्न विद्युत परिपथों के तरंगरूपों (waveforms) को प्रदर्शित करने, मापने और उनका विश्लेषण करने के लिए मुख्य रूप से किस उपकरण का उपयोग किया 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?