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Solving time: 2 mins

विद्युत वाहक बल की वैद्युत माप के लिये विभवमापी एक यथार्थ तथा बहुमुखी युक्ति है, क्योंकि, इस विधि में शामिल होता है :

A
विभव प्रवणता

B
गैल्वेनोमीटर से धारा के प्रवाहित न होने की स्थिति

C
सेलों, गैल्वेनोमीटर तथा प्रतिरोधों का संयोजन

D
सेलों का उपयोग

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Text SolutionText solutionverified iconVerified

विद्युत वाहक बल की वैद्युत माप के लिये विभवमापी एक यथार्थ युक्ति है, क्योंकि इस
विधि में शामिल होता है-गैल्वेनोमीटर से धारा के प्रवाहित न होने की स्थिति।
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Many flying and swimming animals-as well as human-engineered vehicles-rely on some type of repetitive motion for propulsion through air or water. For this problem, assume the average travel speed depends on the repetition frequency , the characteristic length scale of the animal or vehicle , the acceleration of gravity , the density of the animal or vehicle , the density of the fluid , and the viscosity of the fluid a) Formulate a dimensionless scaling law for involving all the other parameters.b) Simplify your answer for part a) for turbulent flow where is no longer a parameter.c) Fish and animals that swim at or near a water surface generate waves that move and propagate because of gravity, so clearly plays a role in determining . However, if fluctuations in the propulsive thrust are small, then may not be important. Thus, eliminate from your answer for part b) while retaining , and determine how depends on . Are successful competitive human swimmers likely to be shorter or taller than the average person?d) When the propulsive fluctuations of a surface swimmer are large, the characteristic length scale may be instead of . Therefore, drop from your answer for part b). In this case, will higher speeds be achieved at lower or higher frequencies?e) While traveling submerged, fish, marine mammals, and submarines are usually neutrally buoyant or very nearly so. Thus, simplify your answer for part b) so that drops out. For this situation, how does the speed depend on the repetition frequency Although fully submerged, aircraft and birds are far from neutrally buoyant in air, so their travel speed is predominately set by balancing lift and weight. Ignoring frequency and viscosity, use the remaining parameters to construct dimensionally accurate surrogates for lift and weight to determine how depends on and .
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Question Text
विद्युत वाहक बल की वैद्युत माप के लिये विभवमापी एक यथार्थ तथा बहुमुखी युक्ति है, क्योंकि, इस विधि में शामिल होता है :
TopicCurrent Electricity
SubjectPhysics
ClassClass 12
Answer TypeText solution:1
Upvotes2