HCI 2014 P1

1 Name: __________________________________ ( ) Class: _____ HWA CHONG INSTITUTION END-OF-YEAR EXAMINATION 2014 PHYSICS Paper 1 Level: Secondary Three Duration: 45 min Do not open this booklet until you are told to do so. INSTRUCTIONS TO CANDIDATES Write your name, class and index number in the spaces provided and shade accordingly on the OMR sheet. There are thirty questions in this paper. Answer all questions. For each question there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the answer sheet. Read very carefully the instructions on the answer sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Take g to be 10 m s-2 or 10 N kg-1 unless otherwise stated. ___________________________________________________________________ This question paper consists of 10 printed pages, including this page

2 1. The diagram below shows the observed reading of a micrometer screw gauge. If the mircrometer is found to have a zero error of +0.03 mm, what is the corrected reading? A 2.20 mm B 2.23 mm C 2.70 mm D 2.76 mm 2. Which of the following correctly lists one scalar and one vector quantity? 3. Fig 3.1 shows a right -angled prism being used to deflect a ray of light entering normally into the prism. Which ray in Fig 3.2 correctly shows the emergent ray for the same incident ray if the material used for the prism is replaced by one having a smaller refractive index? 4. A converging lens of focal length 15 cm produces an image 30 cm from the lens. How far is the object placed from the lens? A 10 cm B 15 cm C 30 cm D 45 cm Scalar quantity Vector quantity A Displacement Work B Energy Force C Force Acceleration D Velocity Weight Fig 3.1 Fig 3.2

3 5. The figure below shows four rays which have passed through a lens. Three rays came from point Y, but one ray came from point X. which ray came from point X. 6. Converging lens B has the same focal length as converging lens A, but only half the diameter. Both lenses are used, separately, to form two images of a tree on a screen. Which one of the following statement about the images is correct? A The images are both real and inverted. B The images are of the same brightness. C Image B is bigger than the image A. D Image B is not as sharply focused as image A. 7. The diagram below shows the position of a string at a particular instant of time as a transverse wave travels along it from left to right. Which one of the following correctly shows the direction of the velocities of the points 1, 2 and 3 on the string? 1 2 3 A    B    C    D    1 1 2 3

4 8. X and Y are different wave motions. In air, X travels