किस सिद्धांत के अनुसार किसी अवयव के एक बिंदु पर विफलता तब होती है जब अधिकतम मुख्य प्रतिबल (maximum principal stress) अपनी सीमित सामर्थ्य तक पहुँच जाता है?

Which of the following organizations was instrumental in advocating for the abolition of Sati in India?

Who was the first President of independent India?

Who among the following was the founder of the 'Gadar Party'?