O Lvl Physics Dunman High Prelim 2019 Paper 1 and 2 with ANS.pdf

Page 1 of 13 Name Index Number Class 4 A DUNMAN HIGH SCHOOL PRELIMINARY EXAMINATION 2019 GCE O LEVEL PHYSICS Paper 1 6091/1 Paper 1 Multiple Choice 03 September 2019 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your name and index number on all the work you hand in. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. There are forty questions on this paper. Answer all questions. For each question there are four possible answers, A, B, C and D. Choose the one that you consider correct and record your choice in soft pencil on the separate Answer Sheet. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. For teacher’s use: Paper 1 /40 Paper 2 /80 Total /120 This document consists of 13 printed pages. www.KiasuExamPaper.com 199

Page 2 of 13 1 A car travels at a speed of 65 km/h. What is the speed of the car in m/s? A 18.1 m/s B 55.4 m/s C 181 m/s D 1080 m/s 2 A light ray is reflected off two mirrored surfaces. (not to scale) What is the value of θ? A 5° B 10° C 15° D 20° 3 A name tag reads “SAM”. What is the image of the name tag in a plane mirror? A B C D 4 The refractive index for germanium is 4.01. What is the speed of light in germanium? A 7.5 × 107 m/s B 7.5 × 108 m/s C 1.2 × 108 m/s D 1.2 × 109 m/s www.KiasuExamPaper.com 200

Page 3 of 13 5 A thin, converging lens of focal length f, is used to produce various types of images. Which row is correct? location of object type of image produced A less than f inverted, virtual, diminished B between f and 2f upright, real, enlarged C at 2f inverted, real, same size D beyond 2f upright, real, diminished 6 A rope is fixed to a wall at one end with the other end moved up and down to produce a wave. wall What is transferred along the rope due to this motion? A mass B energy C frequency D molecules 7 Which is not an application of microwaves? A To detect structural flaws. B To ionise biological molecules. C To cook food in microwave ovens. D To transmit communication signals. 8 The wavelength of an X-ray is 1.0 nm while the wavelength of a radio wave is 1.0 mm. What is the ratio of the frequency of the X-ray to the frequency of radio wave? A 1 : 1 00 000 B 1 : 1 000 000 C 1 00 000 : 1 D 1 000 000 : 1 9 A sound travels through a solid copper tube and then enters air. Which of the following correctly compares the sound in the solid copper tube to air? frequency speed (in copper tube) A different higher B different same C same higher D same lower www.KiasuExamPaper.com 201

Page 4 of 13 10 A series of compressi