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Jump To Download The National Curriculum Framework (NCF) advocates the promotion of skill oriented, life skill-based, employment-driven and value-based school education. It envisions developing the human capital dedicated to nation, nationality, national integrity and Nepali specialty. The English textbook for Grade 12 has been prepared following the spirit of NCF 2076 and Secondary Level Curriculum 2076 (Grade 11 and Grade12). An attempt has been made to incorporate the emerging needs of learners. The book includes the contents to develop all four language skills blended in the tasks and activities with contextual grammar and related vocabulary. The book has two sections: language development and literature. The language development section includes a range of contemporary issue-based local and global thematic texts intended to develop intensive reading skills and foster competence in grammar, vocabulary, speech and writing. The literature section includes genre-based literary te...

Simple Harmonic Motion(SHM) What is Periodic motion? The motion which repeats itself after equal intervals of time is called periodic motion . For example: the motion of planets and satellites, vibration of springs, motion of pendulum, motion of different hands in watch etc. What is Simple Harmonic Motion? The periodic motion in which particle moves to and fro (back and forth) such that the acceleration of the particle is directly proportional to the displacement from mean position and directed towards the mean position is called simple harmonic motion. i.e. for SHM, a ∝ y ( where y is the displacement from mean position) or, a = −ky ..........................(i) (Where, k is proportionality constant. Negative sign shows that the acceleration opposes the displacement from mean position.) SHM in terms of uniform circular motion(Characteristics of SHM): Equation of SHM: Consider a particle moving in a circular orbit having centre at O and radius r with uniform angular velocity ω. Let P...