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Two identical spheres A and E are at temperature 7⁰C and 17⁰C respectively. In what ratio will they emit thermal radiation? दो एक समान गोले A और B का तापमान क्रमश:7⁰ C तथा 17⁰C हैं। वे किस अनुपात में ऊष्मा विकिरित करेंगे?

The weakest of the four fundamental interactions is the चार मौलिक अन्योन्यक्रियाओं में सबसे कमजोर है

A turbine is called as a ‘Reaction Turbine’ if at the inlet of turbine the water possesses : एक टरबाइन को प्रतिक्रिया टरबाइन कहा जाता है यदि टरबाइन के इनलेट (Inlet) पर पानी पास होता है–

To determine the length of a bridge proposed to be built across a river, the survey method of choice would be :

बच्चों के सामाजिक विकास में......... का विशेष महत्त्व है।

Suraj's amount is 4 times that of Ravi's amount. Ravi's amount is 16 times the amount of Aditya's amount. What is the ratio of Aditya's and Suraj's amount?

When a circle rests over a ground by inclined to it at an angle and perpendicular to Vertical Plane seems to be an ellipse in जब एक वृत्त एक कोण पर झुककर भूमि पर स्थित होता है और ऊर्ध्वाधर तल के लम्बवत होता है तो यह .............में दीर्घवृत्त प्रतीत होता है।

For the motion of a body of mass m along a circular path of radius r, with a uniform speed v, the expression for centripetal force is given by :

If someone travels 15 km distance with a fixed force of 500N, then calculate the work done.