MSHS 2025 PHY PRELIM P1 QP

[Turn over Class/ Index Number / Centre Number/ ‘O’ Level Index Number / Name MARIS STELLA HIGH SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR PHYSICS 6091/01 Paper 1 Multiple Choice 3 September 2025 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your class, index number, Centre number, O level index number and name in the spaces at the top of this page. 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 you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. 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 question booklet. The use of an approved scientific calculator is expected, where appropriate. The total marks for this paper is 40. At the end of the examination, hand in the following separately: (1) Multiple Choice Answer Sheet (2) Question Paper This document consists of 20 printed pages.

2 1 Max Planck’s equation of radiation states that the energy , E, of electromagnetic waves is equal to the product of Planck’s constant, h and the frequency, f of the electromagnetic wave. The equation is 𝐸=ℎ𝑓. What is the unit of Planck’s constant, h, expressed as SI base units? A J / Hz B m s2 / kg3 C kg m2 / s D kg m3 / s2 2 An air-traffic control centre at Seletar looks after aircraft within a 400 km radius of Singapore. A small aircraft, flying due north at 300 km/h, passes over Seletar at 12:00pm. It carries enough fuel for another 550 km of flying. At 12:30pm, air traffic control instructs the pilot to turn through 45° onto a north-westerly bearing. The aircraft continues at 300 km/h until 1:30pm. At 1:30pm the aircraft is still 150 km from its destination. What is the location of the aircraft and which action is required? location of aircraft action required A outside Seletar’s air-traffic control space carry on to destination B outside Seletar’s air-traffic control space make an emergency landing before getting to destination due to insufficient fuel C within Seletar’s air-traffic control space carry on to destination D within Seletar’s air-traffic control space make an emergency landing before getting to destination due to insufficient fuel Seletar not to scale N

3 [Turn over 3 Which of the following distance-time graphs best describes a skydiver jumping off a plane till reaching terminal velocity? A B C D 4 At the top of a cliff of height 100 m, a girl throws a rock upwards with a v