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Web24 feb. 2024 · NCERT Exemplar Class 8 Science is very important resource for students preparing for VIII Board Examination. Here we have provided NCERT Exemplar … Web14 apr. 2024 · Practicing MCQ (Multiple Choice Questions) is an important part of preparing for CBSE Class 11 Chemistry exam for the following reasons: Better Understanding of Concepts: MCQs are designed to test your understanding of the fundamental concepts of Chemistry. By practicing MCQs, you can identify areas where you need more clarity and … Web15 okt. 2024 · Question 8: A pendulum has a frequency of 5 vibrations per second. An observer starts the pendulum and fires a gun simultaneously. He hears an echo from the cliff after 8 vibrations of the pendulum. If the velocity of sound in air is 340m/s -1 , find the distance between the cliff and the observer. (a) 372 m (b) 275 m (c) 350 m (d) 272 m cyberstart semifinalist