2022 ANDSS Phy Prelims P2

This document consists of 26 printed pages. Setter: Mr Richmond Ang O ANDERSON SECONDARY SCHOOL Preliminary Examination 2022 Secondary Four Express CANDIDATE NAME: CLASS: / INDEX NUMBER: PHYSICS Paper 2 Physics Candidates answer on the Question Paper. 6091/02 17 August 2022 1 hour 45 minutes 1110 – 1255 h No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and index number on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid/tape. Section A Answer all questions. Section B Answer all questions. Question 12 has a choice of parts to answer. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A [50] Section B [30] Total [80]

2 PRELIM 4E PHY 2022 6091/2 Section A Answer all the questions in this section. 1 (a) Electric charge can be stated to be either positive or negative. State and explain whether electric charge is a scalar or a vector quantity. ……………………………………………………………………………………. …………………………………………………………………………….….. [1] (b) A potential difference is applied between a pair of horizontal metal plates in a vacuum as shown in Fig. 1.1. Fig. 1.1 A negatively charged particle enters the electric field at point X with a velocity of 0.75 m/s to the right. The particle is deflected by the field and hits the top plate at point Y. (i) Explain why the average velocity of the particle is lower than its average speed as it travels from point X to point Y. ……………………………………………………………………………… ……………………………………………………………………………… ……………………………………………………………………………... ……………………………………………………………………………... ……………………………………………………………………….…. [2]

3 PRELIM 4E PHY 2022 6091/2 (ii) On Fig. 1.2, draw and label all the forces acting on the particle at point X. Fig. 1.2 [2]

4 PRELIM 4E PHY 2022 6091/2 2 A block of weight 15N hangs by a wire from a remotely controlled aircraft, as shown in Fig. 2.1. Fig. 2.1 The aircraft is used to move the block only in a vertical direction. The force on the block due to air resistance is negligible. The variation with time t of the vertical velocity v of the block is shown in Fig. 2.2. The velocity is taken to be positive in the upward direc