Physics is the study of matter and energy and their interactions. It is a fundamental science that is essential for understanding the world around us. Physics is used in a wide variety of fields, including engineering, medicine, and computer science.
This practice test will assess your knowledge of basic physics concepts. The questions are designed to be similar to those that you will encounter on college entrance examinations and the Licensure Examination for Teachers (LET).
To do well on this test, you should review your physics notes and textbook. You should also practice solving physics problems.
I hope you find this practice test helpful. Good luck!
Direction: Choose the letter of the correct answer.
1. What is the primary source of all waves?
a. Vibration
b. Refraction
c. Reflection
d. Interference
2. A transverse wave is characterized by particles of the medium moving:
a. In the same direction as the wave
b. In a direction perpendicular to the wave
c. In a random direction
d. Not at all
3. What happens when sound travels from air into water?
a. Its speed decreases
b. Its speed increases
c. Its speed remains the same
d. It stops traveling
4. How does the pitch of a sound change when its frequency increases?
a. The pitch decreases
b. The pitch increases
c. The pitch remains the same
d. The pitch first increases, then decreases
5. What is the process by which heat is transferred from the hotter end to the colder end of an object?
a. Conduction
b. Convection
c. Radiation
d. Evaporation
6. Why does a light bulb glow when an electric current passes through it?
a. Due to electromagnetic induction
b. Due to heating effect of electric current
c. Due to magnetic effect of electric current
d. Due to chemical effect of electric current
7. What is the SI unit of magnetic field strength?
a. Tesla
b. Weber
c. Gauss
d. Faraday
8. According to Ohm’s law, the current flowing through a conductor is directly proportional to the:
a. Voltage across it
b. Resistance across it
c. Length of the conductor
d. Temperature of the conductor
9. What happens to the resistance of a conductor if its length is doubled, keeping the material and cross-sectional area the same?
a. It becomes half
b. It remains the same
c. It becomes double
d. It becomes four times
. In a series circuit with identical resistors, how does the total resistance compare to the resistance of a single resistor?
a. It's the same
b. It's half
c. It's double
d. It's the sum of the resistances of each resistor
11. Which law states that the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the partial pressures of individual gases?
a. Boyle's Law
b. Charles's Law
c. Avogadro's Law
d. Dalton's Law of Partial Pressures
2. Why does ice float on water?
a. Ice is colder than water
b. Ice is solid and water is liquid
c. Ice is less dense than water
d. The molecules of ice are held together more tightly
3. A block of wood is floating in water, and a block of iron is at the bottom of the same container. Which statement is true?
a. The buoyant force on both blocks is the same
b. The buoyant force is greater on the iron block
c. The buoyant force is greater on the wooden block
d. There is no buoyant force acting on the iron block
4. What is the principle of conservation of energy?
a. Energy can be created but not destroyed
b. Energy can be destroyed but not created
c. Energy can neither be created nor destroyed, but can be transformed from one form to another
d. Energy can either be created or destroyed, but not both
5. When a ray of light moves from a denser medium to a rarer medium, it:
a. Bends towards the normal
b. Bends away from the normal
c. Continues in the same direction
d. Stops moving
16. How is the focal length of a lens related to its power?
a. Directly proportional
b. Inversely proportional
c. Squared relationship
d. No relationship
17. What happens to the pressure of a gas when its volume is doubled, while keeping the temperature constant?
a. It becomes half
b. It remains the same
c. It becomes double
d. It becomes four times
18. What is the process in which a solid directly changes to a gas without becoming a liquid first?
a. Evaporation
b. Condensation
c. Sublimation
d. Melting
19. A body is projected vertically upwards. What happens to its kinetic energy at the highest point?
a. It becomes maximum
b. It becomes zero
c. It remains the same
d. It becomes half
20. What does the slope of a velocity-time graph represent?
a. Velocity
b. Acceleration
c. Distance
d. Time
21. What type of mirror is used in a rear-view mirror in vehicles?
a. Plane mirror
b. Concave mirror
c. Convex mirror
d. Parabolic mirror
22. The phenomenon in which light or other electromagnetic radiation is scattered in many directions by colloidal particles or molecules of a gas is known as:
a. Reflection
b. Refraction
c. Diffraction
d. Scattering
23. A point charge q is placed at the centre of a cube. What is the electric flux passing through each face of the cube?
a. Depends on the value of q
b. Depends on the size of the cube
c. q/6ε0
d. q/ε0
24. A Ω resistor is connected across a 20 V battery. How much current flows through the circuit?
a. 0.5 A
b. 2 A
c. A
d. 20 A
25. A 0 W bulb is connected to a 220 V supply. What is the resistance of the filament of the bulb?
a. 0.22 Ω
b. 4.84 Ω
c. 484 Ω
d. 2200 Ω
26. What does the area under a force-displacement graph represent?
a. Displacement
b. Force
c. Work done
d. Power
27. A body is thrown upwards from the ground with a velocity u. What will be its velocity after time t?
a. u - gt
b. u + gt
c. ugt
d. u/gt
28. An object is placed at the center of curvature of a concave mirror. Where will the image be formed?
a. At the center of curvature
b. At the focus
c. At infinity
d. Between the focus and the center of curvature
29. What is the equivalent resistance of three resistors of resistances R1, R2, and R3 connected in parallel?
a. R1 + R2 + R3
b. 1/(1/R1 + 1/R2 + 1/R3)
c. R1R2R3 / (R1R2 + R2R3 + R3R1)
d. R1R2*R3
30. What type of wave is a sound wave?
a. Transverse wave
b. Longitudinal wave
c. Electromagnetic wave
d. Polarized wave
31. A body is moving in a circle of radius r with a uniform speed v. What is the acceleration of the body?
a. v^2/r
b. vr
c. r/v
d. r*v^2
32. The phenomenon in which an object absorbs light of certain wavelengths and reflects the rest is known as:
a. Interference
b. Polarization
c. Absorption
d. Color
33. What is the total energy of a simple harmonic oscillator?
a. Kinetic energy + Potential energy
b. Kinetic energy - Potential energy
c. Kinetic energy * Potential energy
d. Kinetic energy / Potential energy
34. What happens to the temperature of a gas when it is compressed, assuming no heat is lost to the surroundings?
a. It increases
b. It decreases
c. It remains the same
d. It initially increases, then decreases
35. According to the principle of conservation of momentum, the total momentum of a system of particles is constant, provided that:
a. No external force acts on it
b. The particles do not interact with each other
c. The particles are at rest
d. The system is not in equilibrium
36. A body of mass m is moving in a circular path of radius r with a constant speed v. What is the work done by the centripetal force in half a revolution?
a. Zero
b. mvr
c. 2Ï€mvr
d. πmvr
37. What type of mirror is used in a solar cooker?
a. Plane mirror
b. Concave mirror
c. Convex mirror
d. Cylindrical mirror
38. The property of a coil by which it opposes any change of current in it is called:
a. Resistance
b. Capacitance
c. Inductance
d. Impedance
39. What happens to the resistance of a pure metal as the temperature increases?
a. It increases
b. It decreases
c. It remains the same
d. It first increases, then decreases
40. What happens to the speed of sound when the temperature of the medium increases?
a. It increases
b. It decreases
c. It remains the same
d. It becomes zero
41. A body of mass m is raised to a height h above the ground. What is the potential energy of the body with respect to the ground?
a. mgh
b. m/h
c. mg/h
d. h/mg
42. What is the work done in moving a charge of 1 coulomb across two points in a circuit between which the potential difference is 1 volt?
a. 1 joule
b. 1 watt
c. 1 ohm
d. 1 ampere
43. A body is moving with a uniform velocity. What is the work done by the net force acting on it?
a. Zero
b. Maximum
c. Minimum
d. Cannot be determined
44. What is the unit of electric field strength?
a. Newton
b. Volt/meter
c. Coulomb
d. Ampere
45. Which of the following is a vector quantity?
a. Time
b. Speed
c. Distance
d. Acceleration
46. The point within an object from which the weight of the object can be considered to act is known as the:
a. Centre of gravity
b. Centre of mass
c. Centre of force
d. Centre of inertia
47. Which law states that the rate of heat flow through a material is directly proportional to the area of the material and the temperature difference across the material, and inversely proportional to the thickness of the material?
a. First law of thermodynamics
b. Second law of thermodynamics
c. Stefan’s law
d. Fourier's law of heat conduction
48. A light wave in air enters a glass slab. What happens to its wavelength and frequency?
a. Wavelength decreases, frequency remains the same
b. Wavelength remains the same, frequency increases
c. Wavelength increases, frequency decreases
d. Wavelength and frequency both remain the same
49. A car moving with a speed of 50 km/h can be stopped by brakes after at least 6 m. If the same car is moving with a speed of 0 km/h, what is the minimum stopping distance?
a. 6 m
b. 2 m
c. 24 m
d. 48 m
50. A body is thrown vertically upwards with a speed v. What is the speed of the body when it returns to the point of projection?
a. Zero
b. v
c. 2v
d. v^2
Click here for the answer key.
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