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Negeri Sembilan Trial 2023 Physics Kertas 1

1
The formula below shows the relationship between the period of oscillation of a pendulum and several other physical quantities. T^2 = \frac{4\pi^2 l}{g} Which of the following graphs is true?
2
Diagram 1 shows the velocity-time graph of an object. Which of the following acceleration-time graphs shows the object's motion?
3
Diagram 2 shows an astronaut with mass of 75 kg throws a 45 kg bag causing him to jerk towards the space capsule. If the bag is thrown at a velocity of 8 m s⁻¹, what is the velocity of the astronaut after throwing the bag?
4
Which of the following is true about weight?
5
The Earth can maintain its layer of atmosphere because
6
Earth has an orbital period of 365 days and its mean distance from the Sun is 1.495 x 10^8 km. The plane Mars mean distance from the Sun is 2.28 x 10^8 km. Calculate Mars's orbital period in Earth days.
7
Diagram 3 shows an ice pack placed on the forehead of a child with a high fever Initially, which of the following is correct about the thermal contact of the child's head with the ice pack?
8
Diagram 4 shows rice being cooked using clay pot. What are some of the physical properties of the clay pots that make them suitable to be used for the above purpose?
9
Diagram 5 shows respiration process. Which of the following physics laws explains the phenomenon above?
10
Diagram 6 shows a scuba tank. The initial pressure in the tank is 1.317 x 10^7 Pa. Calculate the final pressure inside the tank after it cools from 1000 °C to 25 °C.
11
A system has a natural frequency of oscillation equals to f. An external force is supplying energy to the system to perpetuate the oscillations of the system. Resonance will occur in this system if energy is supplied to the system at a frequency equal to
12
Diagram 7 shows a cross sectional of ripple tank with a slopping base and a plane dipper being vibrated. Which of the following wave patterns can be seen on the screen?
13
Diagram 8 shows two wave pulses are at the same distance from X. Which waveform is observed at X?
14
Diagram 9 shows an application of electromagnetic waves. Which pair is correct about the characteristics of the wave used?
15
Diagram 10 shows a graph of image distance, v against linear magnification, m for a convex lens. What is the quantity represented by p?
16
Diagram 11 shows a light ray propagating from glass medium to the air. The refractive index of glass is 1.50. What is the speed of light in the glass medium?
17
Which of the following optical instrument uses the concept of total internal reflection?
18
Mirage can be seen on a road on a hot day. Which light phenomena cause the appearance of mirages?
19
Which of the following does not describe an object in equilibrium?
20
Diagram 12 shows three forces acting on an object. Which of the following represents the magnitude and direction of the resultant force acting on the object?
21
Diagram 13 shows two loads of mass 3 kg and 5 kg are joined by a length of rope passes over a smooth pulley. When the system is released from rest, what is the acceleration of the load?
22
Diagram 14 shows three springs, L, M, and N which is made of same material. A 100 g mass of load is then hung to each spring. The extension, x, of each spring is measured as XL, XM and XN respectively. Which of the following graph is correct for L, M and N if 1 kg loads are attached to each spring?
23
Which of the following will affect the pressure in liquid? I Density of liquid II Gravitational field strength III Depth of liquid IV Surface area of the container
24
Diagram 15 shows a cross-sectional of a hydraulic jack with multiplying factor 100. The mass of a car is 2 000 kg. What is the force F?
25
Diagram 16 shows a ship which sailing at sea. What will happen to the buoyant force acting on the ship when it reaches the river bay?
26
Diagram 17 shows a dispersion of a candle flamed which placed in between two metal plates, M and N which are connected to an extra high-tension voltage (EHT). What are the charges on metal plate M and N?
27
Diagram 18 shows a nichrome wire connected between R and S. If the currect flow in circuit is constant, the reading of voltmeter will increase when
28
Diagram 19 shows an electric circuit which consist of three resistors. What is the reading value shown on the ammeter?
29
Diagram 20 shows a circuit containing a dry cell and a resistor, R. The dry cell has internal resistance, r, and electromotive force (e.m.f) 1.5 V. What is the voltmeter reading before and after the switch is on?
30
Diagram 21 shows an electric generator. Which of the following is not true about the generator?
31
The efficiency of a transformer can be increased in the following ways except
32
Which of the following components is used as a rectifier?
33
Which of the following is used for a step-down transformer?
34
Which circuit will not light up the bulb?
35
Diagram 22 shows a maltese cross tube. Which of the following is true when 6 V power supply is switch on. I Electrons gain enough kinetic energy to accelerated II Electrons are emitted from the cathode III The heated filament supplies energy to the free electrons IV Thermionic emission will occur
36
Diagram 23 shows a radioactive decay curve of an activity of radioactive substance. What is the half-life of the radioactive substance?
37
The following equation shows the nuclear fission of \text{}_{92}^{235}\text{U}. \text{}_{92}^{235}\text{U} + \text{}_{0}^{1}\text{n} \rightarrow \text{}_{56}^{141}\text{Ba} + \text{}_{36}^{92}\text{Kr} + 3\text{}_{0}^{1}\text{n} + \text{X} What is X?
38
Diagram 24 show a control of rate of nuclear reaction in nuclear reactor used to generate energy. What is the function of moderator in that control system?
39
Given that the photon energy of the red light is 2.93 x 10^-19 J and the work function of lithium metal is 2.5 eV. What would happen if the red light shone on the lithium metal surface? [1eV = 1.60 x 10^-19 J]
40
What is the maximum velocity of the photoelectron emitted when a monochromatic light (λ = 460 nm) is shone on a metal surface which has work function of 2.00 eV? [Given hc = 1.243 x 10^3 eV nm, 1 eV = 1.60 x 10^-19 J, mass of electron, m = 9.11 x 10^-31kg]
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