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ICSE Class X Mid-term 2025 : Physics (Lady Ratanbai and Sir Mathuradas Vissanji Academy, Mumbai)

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L. R. & S. M. VISSANJI ACADEMY Secondary Section 2024-25 VISSANJI Unit Test 1 ACADEMY Subject: Physics Std: Reay foe aoriow Marks: 20 Time:30 mins 10 Date: 02/07/2024 INSTRUCTIONS: provided. " Answers to this paper must be written in the answer sheet " You will not be allowed to write during the first five minutes. " This time is to be spent in reading the question paper.allowed the time is paper of this at the head given The time " for writing the answers. " The intended marks for the questions or parts of questions are given alongside the questions. This paper has 2 printed sides. Q.I Choose the correct answers from the options given below 1) A boy drags a load along a horizontal plane in the direction of force 'F'. The boy does b) some positive work a) no work negative work d) none of these 2) 1 eV = a) 1.6 x 10-19 b) 16 x 10-19 c) 0.16 x 10-19 d) 1.6 x 1019 3) A body is describing a uniform circular motion. Which of the following quantities is/are constant? b) acceleration velocity d) both (a) and (b) speed 4) Power is the product of: a) force and time b) force and displacement c) force and acceleration d) force and velocity (5)) Assertion (A) : Power developed in cireular motion is always zero. Reason (R) : Work done in case of circular motion is zero. a) Both A and R are true c) A is true but R is false b) A is false and R are true d) Both A and R are false (5] [10] Question II: 1(i) What do you understand by the term moment of force? i ) State the relation between unit of moment of force in S.I and C.G.S systemn 2.5 s. calculate 2. An energy of 4 kJ causes a displacement of 64 m in (a) Force (1] (b) Power 3. i) State the condition for a body to be in equilibrium. of string is ii) State the type of equilibrium when a pebble fixed at the end [1 whirling in a circular path. |11 4. i) Define centre of gravity ii) What is the position of centre of gravity of cylinder? the In the given figure a girl of weight 500 N runs up stairs of a plane in 10s. What is the power Flight of stairs Sm utilized to climb to the top? Question [5] I: that applied on wheel of radius 1.5 m so 1. Two equal forces Fi and F2 are the moment of couple is 30 Nm. the wheel is rotated clockwise, such that (2) force. Calculate the magnitude of each of the 0.3 n opposite ends of a 2. A parent and child are at 690 N playground see-saw. The parent weighs adult sits and the child weighs 140 N. The Calculate the distance 0.3 m from the pivot. for the the child must sit from the pivot 2) see-saw to be balanced. (5 140 N 690 N much work is done by the in circular path, how moves body the When 3. bodv? Give reason. (1] 2

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