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ICSE Class X Prelims 2025 : Physics (Le Grand International School (LGIS), Sahastradhara, Dehradun)

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Le Grand International School Pre Board I Physics Class-X Time Allowed: 2 hours Maximum Marks: 80 General Instructions: Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during first 15 minutes. This time is to be spent in reading the question paper.The time given at the head of this Paper is the time allowed for writing the answers. Section A is compulsory. Attempt any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [ ]. Section A 1. Choose the correct answers to the questions from the given options. (Do not copy the question, write the [15] correct answers only.) (a) (b) (c) Study the diagram alongside and calculate the moment of couple. a) 1 Nm b) 6 Nm c) 2 Nm d) 4 Nm When white light is dispersed by a prism, compared with blue light, the red light is a) slowed down less and refracted less b) slowed down more and refracted less c) slowed down more and refracted more d) slowed down less and refracted more A pendulum is oscillating freely. Its bob has: a) a constant energy which is the sum of [1] [1] [1] b) only kinetic energy potential and kinetic energy c) maximum kinetic energy at extreme position (d) (e) d) maximum potential energy at its mean position A radioactive substance emits: [1] a) in the order of , and particles b) -radiations or -radiations c) simultaneously , and radiations d) X-rays and -rays Assertion (A): When a force acts on a stationary rigid body which is free to move and if body starts moving in straight path in direction of applied force, then it is said to be linear motion. [1]

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