ये होता है Truly Next Level Smartphone Tesla Model Pi #facts #shorts

Rutherford proposed the atomic meodel after his most stiking experiment an apha-scattering leading to discoveluy of nucleus . Bohr later on modified the atomci model on the balis of Planck's quantum theory of light and prosed the concept of stateonry cireclar orbits of quanise enrgy (nh) /( 2pi) The colloection of fine lines in line spectrum led Sommerfeld to gae the idea fo elliptical orbits .He successfully explained the existence fo subshells and their number in a shell . The angular momentum of subshells was proposed as sqrt ( l(l +120)) . h/( 2 pi) . The emission of a spectral line in atomic spectra was supposed to be due to the jump of elecrtron from one enrgy level to other . No-directional orbitals is :

Graphite is a much better conductor of heat and electricity than diamond. This is due to the fact that each carbon atom in graphite:( ग्रेफ़ाइट ऊष्मा ओर धारा का चालक होता है , क्यों ?)

A rectangular lawn whose length is twice of its breadth is extended by having four semi-circular portions on its sides. What is the total cost (in Rs.) of levelling the entire lawn at the rate of Rs.100 per square metre if the smaller side of the rectangle lawn is 12 m? (Take pi= 3.14 ) एक आयताकार लॉन जिसकी लंबाई उसकी चौड़ाई से दोगुनी है, उसके भुजाओ पर चार अर्ध-वत्ताकार हिस्से बनाकर इसे बढ़ाया जाता है। यदि आयताकार लॉन की चौड़ाई 12 मीटर है तो पूरे लॉन को 100 रुपये प्रति वर्ग मीटर की दर से समतल करने में कुल लागत (रु में) क्या है ? (मानिए pi = 3.14)

A certain sum is lent at 4% p.a for 3 years 8% p.a for next 4 years and 12 % p.a beyond 7 years. If for a period of 11 years the simple interest obtained is ₹ 27,600, then the sum is (in ₹ ): एक निश्चित राशि 3 वर्षों के लिए 4% प्रति वर्ष, अगले 4 वर्षों के लिए 8% प्रति वर्ष तथा 7 वर्षों के बाद 12% प्रति वर्ष की दर से उधार दी जाती है। यदि 11 वर्षों की अवधि के लिए साधारण ब्याज 27,600 रुपये प्राप्त होता है, तो यह राशि (रुपये में) कितनी है?