Beatty Prelim J_4E5N 5086 Phy P2 2025 final for review (1)

BEATTY SECONDARY SCHOOL PRELIMINARY EXAMINATION 2025 SECONDARY FOUR EXPRESS / FIVE NORMAL (ACADEMIC) / G3 CANDIDATE NAME CLASS REGISTER NUMBER SCIENCE (PHYSICS, CHEMISTRY) 5086/02 Paper 2 Physics 29 August 2025 Setter: Mrs Seah 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and register number on all the work you hand in. You may use an HB pencil for any diagrams, graphs, tables or rough working. Write in dark blue or black pen. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. You may lose marks if you do not show your working or if you do not use appropriate units. Section A Answer all questions. Write your answers in the spaces provided on the question paper. Section B Answer only one question. Write your answers in the spaces provided on the question paper. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use A 55 B….. 10 Total 65 This document consists of 21 printed pages and 1 blank page. [Turn over

2 Section A Answer all the questions in the spaces provided. 1 (a) A student compares microwaves and ultraviolet radiation in a vacuum. Complete the sentences with only the phrases provided higher than less than the same as The frequency of ultraviolet radiation is higher than the frequency of microwaves. [1] The speed of microwaves in a vacuum is the same as the speed of ultraviolet radiation in a vacuum. [1] (b) State the region of the electromagnetic spectrum that is used for sun-tanning beds. Ultraviolet radiation [1] 2 Fig. 2.1 shows how the speed of a vehicle changes with time. Fig. 2.1 (a) Describe the motion of the vehicle from t = 200 s to t = 220 s. Uniform/constant deceleration ……………………………………………………………………………………….. [1] (b) Calculate (i) the acceleration of the vehicle in the first 70 s. 𝒂 = 𝒗−𝒖 𝒕 = 𝟐𝟓.𝟎 𝟗𝟎 𝒐𝒓 ( 𝟏𝟗.𝟓 𝟕𝟎 ) = 0.278 or = 𝟎. 𝟐𝟕𝟗 = 0.28 m / s2 (2sf or 3sf) acceleration = ………………… m/s2 [1] 30 25 20 15 10 5 0 20 40 60 80 100 120 140 160 180 200 220 speed m/s time / s

3 (ii) the distance travelled for the whole journey. Total distance = area under graph = 𝟏 𝟐 [(𝟏𝟗𝟎 − 𝟗𝟎) + 𝟐𝟐𝟎) × 𝟐𝟓. 𝟎 = 4000 m distance travelled = ……………… m [2] 3 A cylindrical beaker with a base area of 30.0 cm 2 contains a mixture of two immiscible liquids, A and B. The mass of the beaker is 50.00 g. The beaker is placed on an electronic beam balance as shown in Fig. 3.1. Fig. 3.1 (a) Calculate the average density of the mixture.