L 01 Imp QueAns परीक्षा में पूछे जाने वाले प्रश्नोत्तर S-Block elements Class 11th Chap 10 In Hindi

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June से पढ़कर Class 11th परीक्षा 2024 में 95% कैसे लाये

Class 11 NEET 2020 - Revision In 60 Days | Hydrogen & S Block Elements -Quick Revision | NEET Chemistry | Important Questions

Class 12 New Session 2024-25? आरंभ बोर्ड 2025 का✅ 11th से 12th में जाने वाले बच्चों के लिए VVI Video

The graph shows the result of 10th class students of a school for 4 years. Study the graph and answer the questions: The number of students appeared for the 10th class exam in the year 2002 is. निम्नलिखित दण्ड आरेख 10 वीं कक्षा के छात्रों का 4 वर्ष का परीक्षा परिणाम दर्शाता है। आरेख का अध्ययन कीजिए और निम्नलिखित प्रश्नों का उत्तर दीजिए : छात्रों की संख्या वर्ष 2002 में 10 वीं कक्षा की परीक्षा में शामिल छात्रों की संख्या बताइए:

One side of spring of initial, instreached length l_(0) = 1m , lying on a frictionless table, is fixed, the other one is fastened to a small puck of mass m = 0.1 kg . The puck is given velocity in a direction perpendicular to the spring at an initial speed v_(0) = 11 m//s . In the course of the motion, the maximum elogation of the spring is l = l_(0)//10 . What is the force constant of the spring (in SI units) ? .

Blocks shown in figure have been placed on a smooth horizontal surface and mass of (n + 1)^(th) block is (1)/(20) times the mass of n^(th) block (where n=1,2,3,4,…. ). The first block is given an initial velocity u towards the second block. All collision are head on elastic collisions. If u = 10 m//s then how many blocks must be kept so that the last one acquires speed equal to or greater than the escape speed (=11.0 km s^(-1)) [Take log_(10)((40)/(21))=0.28 and log_(10)(11)=1.04 ]

frequency of a photon emitted due to transition of electron of a cerrain element from L to K shell is found to be 4.2 xx 10^(18) Hz using moseley 's law, find the atomic number of the element , given that the Rydberg's constant R = 1.1 xx 10^(7) m^(-1)