Physical-Sciences-Grade-10-March-2023-QP-and-Memo_hlayiso.com_.pdf

Downloaded from hlayiso.com EDUCATION nO Dias J KWAZULU-NATAL PROVINCE yaa Sa REPUBLIC OF SOUTH AFRICA N 7 f 4 { NATIONAL : : SENIOR CERTIFICATE i i : i i i i caaieieieieiaieiaianel | | iy { : ‘| @ @ cy ¥ “ TIME: 1% hours MARKS: 75 This question|paper KENSISS.OF.9 bages and a data sheet. 2a SES a TTT

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com Physical Sciences (Grade 10) NSC Common Test March 2023 2 INSTRUCTIONS AND INFORMATION a @ MNO Write you e and class (e.g. 10A) in the appropriate spaces on the ANSWER BOOK. This que! paper consists of 7 questions. Answer ALL questions in the ANSWER BOOK. ' Number the answers correctly according to the numbering system used in this question paper. Leave ONE line between two sub-questions, e.g. between QUESTION 2.1 and QUESTION 2.2. You may use a non-programmable calculator. You are advised to use the attached DATA SHEET. Show ALL formulae and substitutions in ALL calculations. Round off your final numerical answers to a minimum of TWO decimal places. Give brief motivations, discussions, etc where required. Write neatly and legibly. Please turn over

Downloaded from hlayiso.com phprenisatnad eal! 4gQm Stanmorep hy: aes- com Common Test March 2023 3 QUESTION 1 : MULTIPLE-CHOICE QUESTIONS Various options are provided as possible answers to the following questions. Each question has only ONE correct answer. Choose the answer and write only the letter (A-D) ne: he question numbers (1.1-1.6) in the ANSWER BOOK ,¢.91.7D 1.14 Them m displacement of a particle from its rest position is known as its ... A wavelength. B amplitude. Cc frequency. D period. (2) 1.2 | Which ONE of the following statements is TRUE? A Sound waves can travel in vacuum B Sound waves are electromagnetic waves Cc The speed of sound waves is always constant D The pitch of a sound wave is dependent on its frequency (2) 1.3. The diagrams below represent two sound waves A and B. B A rh E i chy Which ONE of the following combinations that compares the frequency and loudness of A with B is CORRECT? Frequency of A Loudness of A A__| Less than B Greater than B B_ | Greater than B Less than B C_ |The same as B Less than B D_ |The same as B Greater than B (2) Copyright reserved Please turn over

Downloaded from hlayiso.com Downloaded from Stanmorephysgics.com 4 Physical Sciences (Grade 10) Common Test March 2023 1.4. Which ONE of the following statements best describes the behaviour of an electromagnetic wave? A Ele¢tric and magnetic fields vibrate perpendicularly to one another B and magnetic fields vibrate parallel to one another Cc électric field is vibrating and the magnetic field is stationary D Both the electric and magnetic fields are stationary (2) 4.5 Alearner has determined the charges on various objects. Which value has been INCORRECTLY calculated? A 9,6 x 107°C B 6,4x10°C Cc 48x10%C D = 4,0x10%C (2) 1.6 The voltmeter below reads 8V. Hi]! 10Q 5Q ©) The emf of the battery is ... A 12V B av Cc eV D 4Vv (2) 2x6 [12] Convriaht reserved Please turn over

Downloaded from hlayiso.com Phys RMQa Gree from Stanmorephysécs.com Common Test March 2023 QUESTION 2 The diagram bel hows two pulses P and Q travelling in opposite directions in the same mediu Ise Q travels to the left. Pp cm JN <— Q The amplitude of pulse P is 3cm and that of pulse Q is UNKNOWN. The two pulses meet at point X and the resulting amplitude is shown below. X 5cm 2.1 Define pulse. (2) 2.2 What type of interference takes place at X? (1) 2.3. Determine the amplitude of Q. (1) 2.4 A learner states that immediately AFTER pulses P and Q meet at point X, pulse P will move TO THE LEFT. 2.4.1 Is the learner’s observation correct? Answer YES or NO. (1) 2.4.2 Use a physics principle to explain the answer to Question 2.4.1 (2) [7] Copyright reserved Please turn over

Downloaded from hlayiso.com prydomaloa ded. fgom Stanmorep hygée: sS.com Common Test March 2023 6 QUESTION 3 The following wave pattern is produced by a wave that takes 2,5 seconds to complete one wave cycle. Wave direction ———— RAAP A particle at point B vibrates at 90° to the direction in which the waves are moving. 3.1. What type of wave is indicated in the diagram above? (1) 3.2. Give ONE reason why a particle at B will be OUT OF PHASE with a particle atC. (1) 3.3. Determine the frequency of this wave. (3) 3.4 If the speed of the wave is 0,08 m.s”', calculate the value of x in metres. (4) 3.5 How long (in seconds) does it take for a particle to move from point A to point D? (2) {14] QUESTION 4 A wave source on a ship sends out sound waves of frequency 25 kHz to the bottom of the sea. A receiver attached to the ship detects these waves a short while later. The speed of sound in water is 1500 mes. 4.1. What is an echo? (2) 4.2 Calculate the wavelength of these waves (3) 4.3. Can these sound waves be heard by the human ear? Give on. (2) 4.4 Calculate the depth of the water beneath the ship if the waves are detected by the receiver 10 seconds after being emitted. (4) {11] Copyright reserved Please turn over

Downloaded from hlayiso.com pryawaeadedefsom Stanmorephysics.com Common Test March 2023 7 QUESTION 5 The electromagnetic spectrum includes amongst others, radio waves, ultraviolet waves, gamma rays, visible light and x-rays. 5.1 Briefly oat what is meant by the DUAL nature of electromagnetic radiation. (2) 5.2 Name the bee of electromagnetic radiation that: 5.2.1 IS-used to sterilize medical instruments. (1) 5.2.2 Has the longest wavelength. (1) 5.3. State ONE danger of ultraviolet light. (1) 5.4 A photon of an electromagnetic wave has a wavelength of 700 nm. Calculate the energy associated with this photon. (5) 5.5 How will the energy of this photon be affected if its wavelength is decreased? Choose from INCREASES, DECREASES or REMAINS THE SAME. Give a reason for the answer. (2) [12] QUESTION 6 Two identical insulated spheres, X and Y, suspended by threads from a ceiling, are held at a small distance apart, as shown in the diagram below. +6,4x10%C xX Y Sphere X carries a charge of +6,4 x 10°°C, while sphere Y has an E SS of 30 electrons. 6.1 Calculate the magnitude of the charge on sphere Y. (3) 6.2 The spheres are allowed to touch each other. After touching, they move away from each other. 6.2.1 State the principle of conservation of charge. (2) Copyright reserved Please turn over

Downloaded from hlayiso.com pry @Manended yom Stanmorep hygics. com Common Test March 2023 8 6.2.2 Give a reason why the spheres move away from each other after touching. (1) 6.2.3 Calculate the charge on each sphere after they have separated. (3) 6.3. ANEUT phere Z, is placed next to sphere Y as shown below. S ve 6.3.1 What is meant by a neutral sphere? (2) 6.3.2 Use a sketch to show how the charges re-arrange themselves inside sphere Z. (2) [13] OSupyright reserved Please turn over

Physical Sciences (Grade 10) Downloaded from hlayiso.com Downloaded | from Stanmorepygies- COM common Test March 2023 QUESTION 7 Study the circuit diagram below. Ignore the resistance of the battery and the wires. Switch S is initially CLOSED. 7A 7.2 7.3 L———Ca, LE fn R> Define terminal potential difference. (2) Calculate the reading on the | voltmeter V if the battery transfers 3 x 104 J of energy per every 2,5 x 10°C of charge that flows through the circuit. (3) Determine the reading on ammeter A; if the reading on ammeter A; is 1,62 A and the reading on ammeter Ag is 0,65A (2) How will the resistance of R; compare to that of R2? Choose from GREATERTHAN, LESS THAN or EQUAL TO. (1) Switch S is now OPENED. What term is used to describe the reading on the voltmeter? . (1) [9] TOTAL [75] Copyright reserved Please turn ove:

Downloaded from hlayiso.com Prysiiananleaded from Stanmor eplueics. com Common Test March 2023 DATA FOR PHYSICAL SCIENCES GRADE 10 PAPER 1 (PHYSICS) EGEWENS VIR FISIESE WETENSKAPPE GRAAD 10 VRAESTEL 1 (FISIKA) TABLE 1;—PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES (NAAM SYMBOL/SIMBOOL VALUE/WAARDE Electron charge de -1,6x 10°C TABLE 2: FORMULAE/TABEL 2: FORMULES WAVES, SOUND AND LIGHT/GOLWE, KLANK EN LIG v=fr or c=fA T=t E=hf ELECTROSTATICS Q Q,+Q = Q= 1 2 "a, 2 ELECTRIC CIRCUIT Q=l At |= P| S < | no] Rs = Ry +Ror.... o|F| a= Copyright reserved

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com KWAZULU-NATAL PROVINCE EDUCATION REPUBLIC OF SOUTH AFRICA TIME: 1 % Hour MARKS: 75 NATIONAL SENIOR CERTIFICATE These marking guideline consists of 5 pages.

Downloaded from hlayiso.com Phydid@ Borrhoesderabesipnom Stanmoreplysics. com Common test March 2023 Marking Guideline QUESTION 1 11° Bvv (2) 12 D “7 (2) 13D “~ fa (2) 14. A vv (2) 15 Dvv (2) 16 Avv (2) [12] QUESTION 2 2.1. Asingle disturbance ina medium Vv (2) 2.2 Destructive v (1) 2.3 8cm v (1) 2.4 241 No v (1) 2.4.2 According to the principle of superposition” Pulse P will continue moving in its original direction” (2) [7] QUESTION 3 3.1. Transverse V¥ (1) 3.2 They are moving in different /opposite direction V (1) 3.3 f= 1/T¥ = 1/2,5¥ = 0,4 Hzv (3) 3.4 v =fxdv 0,08 =0,4xAv A =0,2m x =0,35mvv (4) Copyright right reserved Please turn over

Downloaded from hlayiso.com Phydida Soeroasd@atefifiom Stanmoreplysics. com Common test March 2023 Marking Guideline 3.5 8,75 seconds¥vv (2) [11] QUESTION 4 im 41 A seuna fh that is reflected Voff a surface v (2) 4.2 v =fxdhy 1500 = 25000 x A v A =0,06m v (3) 4.3. No. ¥ frequency is beyond range for the human ear ¥ (2) D 44 speed = —v pees” it 1500 = 2vv D = 7500 m v (4) [11] QUESTION 5 5.1. Light behaves as a waveY and as a particle V (2) 5.2 5.2.1 Ultraviolet ¥ (1) 5.2.2 Radio waves ¥ (1) 5.3. Causes skin cancer V¥ (1) v 5.4 E= = v _ (6,63x10-*4(3x108) ¥ 7 (700x10-°) = 2,84x107 MJ ¥ (5) 5.5 Increasesv. Energy is inversely proportional to wavelength ¥ (2) [12] Copyright right reserved Please turn over

Downloaded from hlayiso.com Phydid@ Borrhoesderabesipnom Stanmorephysics. com Common test March 2023 Marking Guideline QUESTION 6 6.1 Q=-4Bx10"%C v 6.2.1 Total charge in an isolated system remains constant. VW 6.2.2 Both spheres carry identical chargesY¥ QitQ. v 6.2.3 Qnew = = -18 18 _ (64x10 )+ (-4,8x1078) 2 = 8x10°PC v 6.3.1. The number of electrons is equal to the number of protons VY” 6.3.2 vv QUESTION 7 7.1 Reading across the terminals al a battery when current flows in the circuit | 72 vewy Q _ 3x10) 2,5 x 10° =12Vv 7.3 O97AVY 7.4 GREATER THANY 7.5 emf v TOTAL MARKS: [75] (3) (2) (1) (3) (2) (2) [13] [9] (2) (3) (1) (1) Copyright right reserved Please turn over