एक अर्ध-तरंग पट्टिका (half-wave plate) साधारण (O) और असाधारण (E) तरंगों के बीच कितना कलांतर (phase difference) उत्पन्न करती है?

Which of the following is widely considered the first organized nationwide protest against British rule in India?

Who among the following was the first woman to become a judge of the High Court in India?

Who was Ram Mohan Roy and what movement is he associated with in Indian history?

Which of the following policies was primarily used by Lord Dalhousie to annex territories and expand British control in India?

What was the primary objective of the Swadeshi Movement in India?