2024 MGS Merged

Page 2 of 16 Methodist Girls’ School Physics Paper 1 Sec 4 Preliminary Examination 2024 1 Which line in the table correctly indicates the prefixes micro, nano and giga? × 10-6 ×10-9 ×109 A giga micro nano B giga nano micro C nano micro giga D micro nano giga 2 Which equation contains two vector quantities? A acceleration = change in velocity time taken B average speed = distance travelled time taken C density = mass volume D volume = length × width × height

Page 3 of 16 Methodist Girls’ School Physics Paper 1 Sec 4 Preliminary Examination 2024 3 A car is traveling at constant speed. Brakes are applied for a short period of time and the car continues at a lower constant speed. Which displacement-time graph shows the motion of the car? 4 A box of mass 3.0 kg is initially at rest on a horizontal rough surface. Three parallel horizontal forces of magnitude 2.0 N, 3.0 N and 4.0 N act on the box in the same direction. Friction acts between the box and the ground is 1.5 N. What is the minimum acceleration of the box? A 0.25 m/s2 B 0.50 m/s2 C 1.0 m/s2 D 2.5 m/s2 5 The gravitational field strength on the Moon is one-sixth that on the Earth. An astronaut returns from the Moon to the Earth with a specimen of a moon rock. How would the moon’s rock density and mass change? density mass A higher on Earth higher on Earth B higher on Earth same on Earth and Moon C same on Earth and Moon higher on Earth D same on Earth and Moon same on Earth and Moon displacement displacement displacement displacement

Page 4 of 16 Methodist Girls’ School Physics Paper 1 Sec 4 Preliminary Examination 2024 6 The diagram shows 2 manometers containing mercury. Both are placed in the same room. The manometer on the left is connected to a sealed container filled with gas. The manometer on the right is sealed at one end as shown. All measurements are in cm. What is the pressure of gas in cmHg? A (h 1 + h2) B (h 1 + h3) C (h 1 + h2 – h3) D (h 2 – h1) 7 A cylindrical block rests on a rectangular block. The area of the cylindrical block in contact with the rectangular block is A1 and the area of the rectangular block facing up is A2. The weight of the cylindrical block is W 1 and the weight of the rectangular block is W2. What is the pressure exerted on the cylindrical block by the rectangular block? A W1 A1 B W1 A2 C W2 A1 D W2 A2 area A1 of cylindrical block area A2 of rectangular block

Page 5 of 16 Methodist Girls’ School Physics Paper 1 Sec 4 Preliminary Examination 2024 8 The diagram shows an ornament hung from a ceiling. It consists of objects X, Y and Z suspended from light rods A and B. The masses of X, Y and Z are such that the rods are horizontal. Which row give