Welcome to your Examination (ESSLCME) Physics model 2016 questions.
Examination (ESSLCME)
Physics
Tahisas 2016/January 2024
Time Allowed: 2hours
Number of Items: 50
DIRECTIONS: Each of the following questions is followed by four possible alternatives. Read each question and carefully blacken the letter of your best choice on the separate answer sheet provided.
You may refer to the information given below when you work on some of the questions.
1.
Which set of physical quantities consists of only vector quantities?
2.
which of the following is NOT TRUE about vector?
3.
While going to school, a student travels 6 km east and then 8 km north in 2hrs. The magnitude of student's average velocity and speed are, respectively.
4.
A car start moving from rest and its motion on a straight line is shown in the figure below.
What is the displacement of the car within the first 6 seconds?
5.
The relative velocity of two Cars moving in the same direction is 40m/s and when they move in opposite direction their relative velocity is 60m/s. what is the velocity of each car?
6.
Which one of the following statements is NOT correct about the concept and units of coefficient of friction?
7.
In a perfectly inelastic collision, which of the following is TRUE:
8.
A 20 kg mass is suspended on roof of an elevator with a string. What is the tension force on the string when the elevator is moving upward with acceleration of 2m/s2?
9.
Which of the following are contact forces?
10.
An object of mass m is suspended in air under the action of three forces in the same plane as shown in the figure below. If the mass is in equilibrium, what will be the weight of the object?
11.
The apparent weight of a 60kg student standing inside a lift is
12.
Work is said to be done on an object if
13.
Which one of the following is non-renewable energy source?
14.
Which one of the following is the property of projectile motion?
15.
If a projectile rises vertically upward, as it is fired from the surface of the earth, what would happen to its kinetic energy (KE), potential energy (PE) and mechanical energy (ME)? (Assume that air resistance is negligible)
16.
A particle moves in a circle of radius r with angular velocity 𝝎 and angular acceleration 𝜶. What is the centripetal acceleration of the particle?
17.
An object moves in a circle at constant speed. The work done by centripetal force is zero because
18.
A boy observed that a pen rubbed on his dry hair attracted a neutral piece of paper. What is the cause of the attraction?
19.
An electron, a proton and neutron are located at point A below in an electric field. A short period of time passes. At which position as indicated by the letter on the diagram will the proton be located?
20.
The electrostatic force between two equal charges is 9 x 105 If they are 1m apart each other, what is the magnitude of these charges?
21.
If the potential difference across a parallel plate capacitor is reduced by one – third, by what factor does the energy stored in capacitor changed?
22.
What will happen to the leaves of a negatively charged electroscope when touched by a negatively changed body?
23.
The insertion of a dielectrics material between the plates of a capacitors results in
24.
A current of 1A corresponds to the flow of one coulomb of charge
25.
An 8Ω speaker is connected across the output terminal of a power amplifier that delivers 64W to it. what is the current supplied to the speaker?
26.
A series circuit consists of three identical lamps connected to a battery as shown in the figure below. The switch S, originally open, is closed. What then happens to the brightness of lamp C?
27.
How much does it cost to burn a 100w light bulb for 240 hours, if cost of electricity is 20 cent per kilo watt hour?
28.
What is our best evidence that Earth has a magnetic field?
29.
A 300mm long conductor carry 10A current is situated at right angles to a magnetic field having flux density of 0.8T. What force is exerted on the conductor?
30.
The magnetic force between two parallel wires which are carrying a current in the opposite direction is
31.
Which of the following is NOT correct about magnetic field?
32.
A transistor can be used as the following Except:
33.
A diode is an electronic component that
34.
When a P-N junction is forward biased,
35.
When an object is placed in front of a plane mirror the image is:
36.
An object is placed 25cm in front of a concave mirror having focal length of 10cm. the magnification of the mirror is:
37.
What is the primary focus of spectroscopy in physics and chemistry?
38.
How does Newtonian mechanics relate to stable equilibrium in the human body?
39.
In biology, what does the physics of fluid flow help understand?
40.
What branch of physics is involved in studying the birth, life, and death of stars, galaxies, and the universe as a whole?
41.
How does radar technology collect information about distant objects?
42.
If two balls A and B are kicked at an angle of 370 and 530 with the horizontal respectively, with the same initial velocity u. Which ball has the maximum horizontal displacement?
43.
A wheel rotates counter clockwise in the xy plane, what will be the direction of both angular velocity and angular acceleration if the angular velocity is decreasing in time?
44.
Suppose the gravitational force between two spheres is 60 N. If the magnitude of each mass doubles, What will be the force between the masses?
45.
Which one of the following is CORRECT about Kepler’s laws of planetary motion?
46.
Which statement is CORRECT about the pressure under a fluid in a container?
47.
In a hydraulic press a force of 60N is applied to a smaller piston of area 0.3m2. What load will be supported by the larger piston whose area is 0.6m2?
48.
The specific gravity of a substance is defined as the
49.
Atmospheric pressure increases as
50.
According to Archimedes’ principle, if a solid object floats, the volume of displaced water is equal to the volume of
