
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

ICSE Class X Prelims 2026 : Physics (Queen Mary School (QMS), Mumbai)

10 pages, 0 questions, 0 questions with responses, 0 total responses,

Shilpa Katalkar
Pawar Public School (PPS), Hadapsar, Pune

+Fave Message

Profile Timeline Uploads

Home > icse2023 > F Also featured on: School Page

Formatting page ...

.. Clt--1ttiifp ~,oc/4' crJsE) V. P. Road, Murnba i 400 004 Form: 10 Date: 12/01/ 2026 ---- Prelim inary Examin ation 2025-2 6 PHYSI CS MM:80 WT: 2 hr. \ Section A ( 40 marks) Attcn1 pl all questio ns Questio n 1 Choose the correct answers tot he question ~ fro1TI the given option. In a beam balance, when the beum is balance d in a horizon tal position it is in: 1. a. static equilibr ium b. dynamic equilibr ium c. neither in dynami c equilibr ium nor in static equilibr ium d. unstable equilibr ium If work is done on an object, then : 11. a. it loses energy b. it gains energy c. its energy remains constan t d. none of the above A light body A and a heavy body B have the same momen tum. 111. Choose a correct statem ent from the given options . a. Kinetic energy of body A and body B ,,viii be the same. b. Kinetic energy of body A is greater than kinetic energy of body B. c. Kinetic energy of body B is greater than kinetic energy of body A. d. Unless we know the velocity , we cannot find which body has greater kinetic energy. 1v When a body falls freely toward s the earth, then its total energy : a. increases. b. decreas es. c. remain s constan t. d. first increas es and then decreas es. I {151 V Assertion (A): When a ray o f Jiaht I\ refracted thiough a rectangular gldSS slab, there is o no d1spers1on of light. Re3son (R): Dispersion of light i" the phenom enon f splitting of whitC' light Into its constituent colours. a. Both A and R ,,re tt uc b, Both A Jnd R ure false c. A ,sfalse but R is true. d. A ,s true but R I!: fiJlse. VI will The refractive index of a glass slab is 3/2. When seen from above its thickness appear as: a. 1/3 times its real thickness b. 2/3 times its real thickness c. 3/2 times its real thickness d. none of these v11 I plane Observe the diagram which shows the path of an incident ray through an optica LL' of a lens. The focal length of the lens is 20 cm. L I I I I I "'"' 2F ...... ........ IIF 2F F L' If an object is placed at a distance of 30 cm in front of this lens, then: a. the image will be virtual and diminished. b. the image will be diminished and inverted. c. the image will be virtual and magnified. d. the image will be real and magnified. Sub: Physics Page 2 oflO Forn1: l0 viii Select tll~ opt mn 111 which llstNJ ,1 < frl,qt ll't1r.y, . cctr or110Rnel1c Wt V''\ arc in u, de, of 1ncrea:.lng a. V1'-i1ble li1~ht, \ r .ivs, y-1 nys b. visible light, y c. X r Jy::,, vi~iblc liclH Amplitude and frequency of the natural v1brat1on is found to be constant only rn: a. solids X. x1,iy'l X r,lY'l, V I Jy~, Vt!tibll~ light d. Y r.;iys, IX 1,lV'l, b. liquids d. vacuum c.gases The effective resistance between A and B 1s : A 60 40 8 a. 4 0 x1. b. 6 O C. 10 0 d. 2.4 0 The graph plotted for potential difference (V) against current (I) for ohmic resistors is : a. A curve passing through the origin. b. A straight line not passing through origin. c. A straight line passing through the origin. d. A circle centred at the origin. x11. In the figure given below, the key K is depressed to close the circuit of the solenoid 51. c Choose the correct statement from the following. S1 ~K a. A----...JB No current flows along AB b. A momentary current flows in the solenoid 52 circuit from B to A c. A momentary current flows in the solenoid 52 circuit from A to B d. The coil 52 is attracted to the coil S1 Sub. Ph~ ~ic-; Paf!e .... J of 10 Fonn: 10 xiii. The effect of current on which the use of a fuse a. chemical effect b. magnetic effect b 1s ase don Bulb 'P' marked as 100 W, 220 V and bulb 'Q' marked as GOW, xiv d. induction effect. c. heating effect 110 V The ratio of the resistance of 'P' and 'Q' is a. 12:7 xv. b. 5:7 d. 12:5 c. 5:12 Two atoms are said to be isobars if: a. They have same atomic number but different mass number b. They have same number of protons but different number of neutrons c. They have same number of neutrons but different number of protons and electrons d. Sum of number of protons and neutrons are same but number of protons is different Question 2 a. The type of the energy possessed by the bob of a simple pendulum when it is at I. [6] the extreme position is _ _ _ (potential energy/ kinetic energy) b. Scissor is a _ _ _ multiplier. (force/ speed) c. Clockwise moment produced by a force about a fulcrum is considered to be _ _ _ (positive/ negative) d. The direction of induced current in the following figure is - - - direction. (anti clockwise/ clockwise) s l e. The melting point of ice _ _ _ _ with an increase in pressure. (increases/ decreases) f. Fission of Uranium 238 is possible by Sub: Physics (f - - ast neutrons/ slow neutrons) Page 4 of 10 Form: l 0 II You have just pa'd 1 th cIectr1c1ty bill for your housr,, e (2) a What was it that your famtly t.011\urn, d for whtc h you h,td to pJy 7 b. In what unit wac; It mca~uwd iii. (2) a. State the safe limlt of 5ound level in trrrnc;, of dcic.llJcl for hum,Ht tt,,,,rinj!. b. Name the characteri5ti<; of ~ound in rclntion to its wJveform Question 3 (i) (2] a. Identify the class of the lever shown in the diagram below. b. How is it possible to increase the M.A. of the above lever without increasing its length? L F E [2] (ii) Steel Copper 100 \ A meter rod made of copper and steel as shown in the diagram. Weights of copper and st~el are 10 N and 8 N respectively. a. On which part does the centre of gravity lie {Oto SO or SO to 100) b. Justify your answer (iii) (2] An observer stands at a distance of 1050 m from a cliff and fires a gun. After what time- gap will he hear the echo if sound travels at a speed of 350 m/s in air? (iv) On oxidizing a radioactive substance, what changes would you expect to take place in [2] the nature of radioactivity and why? (v) An electrical gadget can give an electric shock to its user under certain circumstances. [2] Mention any two of these circumstances. Sub: Physics Page 5 of 10 Fon11: 10 - \ ( i) 111 ;) 1 c't O. 0 kI u f .i !> uIJ , l Tht.! fr,lph \hP\\t\ llow thr , 11 L" 1', 111 1t , 111 1 trirr1pP1,1 tur,. ,,f ; ol,d. It ,s h" , t Pd c.1 t " ', t "" d'I r J t (J of 'i (JO JI s l !21 tli r.ub~t<-1nc ,, , h trlf'"S w,th t11n" CcJlculate the ~Pt uf t l:1tr,11l h,,.11 of fu ,1on nf th, s11l>sL111u . 0-+---- ---J.._ _ _ _ _ _ _ _,..__ __ 0 100 300 Times (s [3J n In the following diagram L1 and L2 are the two convex lenses placed at separatio {vii) of equal to the sum of the focal lengths of the two lenses. A and Bare the two rays lens light incident on the lens L1. Complete the path of rays till they emerge out of the L2. What principles have you used in completi ng the diagram? Section B (40 marks) Attempt four questions from this section Question 4 ,. a. Can the absolute refractiv e index of a medium be less than one? DJ the b. A coin placed at the bottom of a beaker appears to be raised by 4.0 cm. If refractiv e index of water is 4/3, find the depth of the water in the beaker. Sub: Phy~ics Page 6 of 10 Fann: 10 is made, is 60 , A ray which the equilateral prism ABC e crrtrcal angle for the glass of DE such tha t the angle it of the prism is refracted along of ligh t inci den t on the side AB Th II [3 ] . Also, LEDB = 90 . makes with the side AC is lSOD A B'-------C Copy the diagram. els along DE.) dent on the side AB. (which trav a. Draw the path of the ray inci t E onw ard s and the ray DE travels from the poin b. Show the path along which through the side BC. iii. surprised to see the pen cil container having wat er and is Jatin puts a pencil into a glass [4 ] in a diffe ren t state. the appearance of the pencil? a. What change is observed in onsible for the change. b. Name the phenome.non resp g how the eye sees the pencil. c. Draw a ray diagram showin 0 Question 5 r. 11. help us to stu dy the rgy invisible el_ectromagnetic rays a. A particular type of high ene nt use of the se rays. e rays and give ano the r imp orta structure of crystals. Name thes the wav elen gth of ligh t? t in glass change on increasing b. How does the speed of ligh [3J vex lens of-91ass affected if How is the focal length of a con a. Lens is a placed in wat er s a larger refractive index the n glas b. Lens is placed in a liquid of c. 111. Lens becomes thic ker at middle of a focal length 8 cm. e 24 cm in fron t of a convex lens An object is placed at a distanc ge so formed? a. What is the nature of the ima image from the lens. b. Calculate the distance of the c. [It ] the image. Calculate the magnification of Sub: Physics Page 7 of 10 Fann: 10 Question 6 (i) In the given diJgram wheel shown has a fixed axle passing through 0. The wheel is kept . h. h t horizontal force stationary under the action of two forces F1 and Fz sue l a , ;., and a vertical force F2 at Q. F1 - p 3 [ ] at P 1 Given: PO= 2.5 cm, QO' = 1.5 cm and 00' = 2.0 cm. a. Show the direction of F2 In the diagram. O' 0 b. Which Is the greater force? c. (ii) Find the ratio between the forces . A stone of mass 'm' is rotated in a circular path with a uniform speed by tying a strong [ 31 string with the help of your hand. Answer the following questions: a. Is the stone moving with a uniform or variable speed? b. Is the stone moving with a uniform acceleration? In which direction does the acceleration act? c. (iii) What kind of force acts on the hand and state its direction? An elephant (mass= 5 tons) takes tourists to a hill resort 0.4 km above the ground level. [4] The elephant carries a 2000 kg load of tourists and luggage and takes 60 minutes. Calculate: a. the work done by an elephant b. potential energy gained by tourist and luggage c. efficiency of the operation d. power of the elephant ifl::horse power. Question 7 (i) The given figure shows the combination of a movable pulley [3] P1 with a fixed pulley P2 used for lifting up a load w. a. State the function of the fixed pulley P2. b. If the free end of the string moves through a distance x, T T (: find the distance by which the load w is raised. c. Calculate the force to be applied to just raise the load of IE] 20 kg f, neglecting the weight of the pulley P1 and friction. Sub: Physics Page 8 of 10 Form: I0 [3] (ii) (iii) . a. Nam e the ty pe of waves which are used for sound ranging. ed in (a) above, not audible to us? b. Wh y are these waves mention c. Give one use of sound ranging. particular speed of starts vibrating violently at some The rear-view mir ror of motorbike [4] mo torb ike a. Wh y does this happen? nomenon taking place? b. Wh at is the name of the phe the violent vibrations? c. Wh at could be done to stop ed by you in a par t (b) above d. Define the phenomenon nam Question 8 (i) [3] vol tme ter reads 12 V. nected to a dry cell bat tery . The con is ter me volt ce stan resi A high the vol tme ter reads ted across the bat tery -ter min als, nec con is ce stan resi 240 a en Wh 7.2 V. Calculate : a. cur ren t in the circ uit battery. b. the inte rna l resistance of the (ii) a. [31 rm 200 V A.C. to device you wou ld use to tran sfo Dra w a labelled diagram of the 15 V A.C. ice? b. Wh at is the nam e of this dev (iii) [4] in one hou r. wat er at 20 C into ice at -10 C A refr ige rato r con ver ts 100 g of t extr acte d per second. Det erm ine the qua ntit y of hea y of ice = 2.1 J/g 336 J/g and specific hea t cap acit = ice of t hea nt late cific spe [Given: 0 c, 4.2 J/g C.] specific hea t cap acit y of wa ter= Que stio n 9 (i) nor th to sou th. tal pla ne carries a cur ren t from A stra igh t wir e lyin g in a hor izon jus t und ern eat h it? .of the ma gne tic fiel d at a poi nt a. Wh at will be the dire ctio n [2] ve at the ans wer in par t (a). b. Nam e the law used to arri Sub: Physics Page 9 ofl O Fonn: 10 (ii) a. [4] Identify the device given in the diagram b. State the principle on which it works c. State the energy change that takes place in the device stated by you in (a) d. State the function of the parts X and Y. K (iii) Ba Rh a. State one difference between electron and beta particle. b. A nucleus Pu emits an a-particle and changes to U which emits a ~-particle and then a y-radiatio n and changes into 2 ~~Np Write the above nuclear changes in the form of an equation giving the atomic number and mass number of each nucleus. ******************************** [4]

Formatting page ...

icse2023 chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: