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ICSE Class X 20 mark paper 2027 : Physics

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Delli ublic School Megacity, Kolkata SESSION 2026 -27 FIRSTREVIEW TEST CLASS:X SUBJECT: PHYSICS TIME: 40 minutes MAXIMUM MARKS: 20 Question1 (S] Choose the correct answerstothequestionsfrom thegivenoptions. (Donotcopy thequestion, writethecorrect answersonly.) (i) Essential characteristic of equilibrium is: (a)Kinetic energy isequaltozero. (b)Velocity equalstozero. (ii) (c)Acceleration equalstozero. (d)Momentum equalstozero. 1 A particle moving withuniformspeedina circular path maintains: (a)constantvelocity (b)constantacceleration (c)constantvelocity but varyingacceleration and (d) varying velocity varyingacceleration. (ii)The centreofgravityofa regularobjectwilldepend on: (a) densityof object (b)volume ofobject (c) distribution ofmass (d)Allof theabove. (iv) Aparticleof mass m moves from restundertheactionof a constantforce whichacts fortwo seconds.The maximum power attained is: F (a) 2Fm (b) 2F (c) 2 (d Page 1 energy. What is (v) have equalkinetic and 4m respectively, Two bodies of masses the ratio oftheir momentum? m (a)1:4 (b) 1:2 1:1 (c) (d)2:1 Question2 and designedtotake off andlandvertically belowshows anaircraft The figure is upward lift movement.Inordertoachievethis, alsoto hoverwithouthorizontal the produced by directing jet a engineoutlet downwards. The enginealsodrives vertical lift fannearthe frontof theaircraft. The weightofthe aircraft is180 kN. The distancebetweenthe lift fanand thecentreofmass is4.6 m and the distance betweenthejet engine outlet and thecentreofmass is2.8 m. lift fan lin fan outlet lit fan engine thrust thnust 46m 2.8 n centre of mass weight jet engine Outlet 180kN isto fanthrust, ifthe aircraft the lift moments aboutX,clculate (a)By taking when hovering. remainhorizontal (ii) the enginethrust. (b)Calculate on the record.The coindoes notslip (a)A smallcoinisplacedon a rotating force? From where does itgetthe centripetal record. [3] inhishands? (b)Why does a rope walkerholda longpole [3] (iii)(a)Can energydoes we have motionwhere momentum changes but kinetic giveone exampleofsuch a motion. If yes, not? in whichE-U<0? (E= totalenergy,and I/= b)Can therebea situation energy,ofthe system) potential (31 Page 2 (iv) A body ofmass 2.0 kg,initially atrest. ismoved by a horizontal force of 0.50N On a smoothtable. Findthework done by the forcein8.0 s and show thatthis equalsthechangeinthekinetic [3] energyofthebody. (v) raphically explain conservation ofmechanical energyformotionundergravity. 3] Page 3

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