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ICSE Class X Prelims 2023 : Physics (Bhaktivedanta Swami Mission School (BSMS), Mumbai)

8 pages, 74 questions, 1 questions with responses, 1 total responses,

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Indian Certificate of Secondary Education (ICSE), New Delhi

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PRELIMINARY EXAMINATION (2022-2023) PHYSICS STD: X DATE: 06/01/23 M. Marks: 80 Time: 2 hours 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 (Attempt all questions from this Section.) Question 1 Choose the correct answers to the questions from the given options: [15] (i) A nut is opened by a wrench of length 10 cm. If the least force required is 5.0 N, then moment of force needed to turn the nut is : (a) 0.5 N m (b) 50 N m (c) 2 N m (d) 20 Nm (ii) A radioactive element undergoes a gamma decay. Then the atomic number of the daughter nucleus (a) decrease by 2 (b) increases by one (c) decreases by one (d) no change (iii) One watt is: (a) kg m2s 3 (b) kg m s 3 (c) kg2m2s 2 (iv) In refraction of light through a prism, the light ray: (a) Suffers refraction only at one face of the prism (b) Emerges out from the prism in a direction parallel to the incident ray (c) Bends at both the surfaces of prism towards its base (d) Bends at both the surfaces of prism opposite to its base (v) The characteristics of sound which shows shrillness of sound is: (a) Quality (b) Amplitude (c) Pitch Page 1 of 8 (d) kg m s 2 (d) Loudness

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