Physics Knowledge with this Online Physics Quiz – GK Questions and Answers
Embark on a journey of knowledge enhancement by taking our Physics Quiz online. This Physics Online Test is a valuable resource for individuals preparing for competitive examinations such as EAMCET, IIT-JEE, and IIT-MAINS. Dive into the realm of Physics GK Questions and Answers, gaining insights into various physics concepts. Before you commence the Physics Quiz, ensure you read and accept the provided instructions and terms and conditions. Click “start” to kick off your Physics Quiz experience.
Explore Physics Quiz Details
1. Which of the following is an example of a vector quantity?
a) Speed
b) Distance
c) Velocity
d) Temperature
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Answer: c) Velocity
Explanation: Velocity is a vector quantity because it has both magnitude and direction.
2. Which law states that for every action, there is an equal and opposite reaction?
a) Newton’s first law
b) Newton’s second law
c) Newton’s third law
d) Kepler’s law
Answer: c) Newton’s third law
Explanation: Newton’s third law of motion states that for every action, there is an equal and opposite reaction.
3. Which type of force does a stretched spring exert?
a) Frictional force
b) Gravitational force
c) Tension force
d) Elastic force
Answer: d) Elastic force
Explanation: A stretched spring exerts an elastic force, which is a restoring force that tries to bring the spring back to its original position.
4. What is the SI unit of force?
a) Newton
b) Watt
c) Joule
d) Pascal
Answer: a) Newton
Explanation: The SI unit of force is the newton, which is defined as the force required to accelerate a mass of one kilogram at a rate of one meter per second squared.
5. Which law states that the rate of change of momentum of an object is directly proportional to the force applied and takes place in the direction in which the force is applied?
a) Newton’s first law
b) Newton’s second law
c) Newton’s third law
d) Kepler’s law
Answer: b) Newton’s second law
Explanation: Newton’s second law of motion states that the rate of change of momentum of an object is directly proportional to the force applied and takes place in the direction in which the force is applied.
6. What is the formula for kinetic energy?
a) 1/2mv^2
b) mgh
c) F=ma
d) P=mv
Answer: a) 1/2mv^2
Explanation: The formula for kinetic energy is 1/2mv^2, where m is the mass of the object and v is its velocity.
7. Which law states that the total energy of an isolated system remains constant?
a) Newton’s first law
b) Newton’s second law
c) Newton’s third law
d) Law of conservation of energy
Answer: d) Law of conservation of energy
Explanation: The law of conservation of energy states that the total energy of an isolated system remains constant.
8. What is the SI unit of power?
a) Newton
b) Watt
c) Joule
d) Pascal
Answer: b) Watt
Explanation: The SI unit of power is the watt, which is defined as the rate at which work is done or energy is transferred.
9. What is the formula for work done?
a) W=Fd
b) F=ma
c) P=mv
d) E=mc^2
Answer: a) W=Fd
Explanation: The formula for work done is W=Fd, where F is the force applied and d is the distance over which the force is applied.
10. Which law states that the pressure of a gas is inversely proportional to its volume at constant temperature?
a) Boyle’s law
b) Charles’s law
c) Gay-Lussac’s law
d) Avogadro’s law
Answer: a) Boyle’s law
Explanation: Boyle’s law states that the pressure of a gas is inversely proportional to its volume at constant temperature.
11. What is the formula for gravitational potential energy?
a) mgh
b) -G(m1m2)/r
c) 1/2mv^2
d) F=ma
Answer: a) mgh
Explanation: The formula for gravitational potential energy is mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height above a reference level.
12. Which law states that the pressure of a gas is directly proportional to its absolute temperature at constant volume?
a) Boyle’s law
b) Charles’s law
c) Gay-Lussac’s law
d) Avogadro’s law
Answer: b) Charles’s law
Explanation: Charles’s law states that the pressure of a gas is directly proportional to its absolute temperature at constant volume.
13. What is the formula for electric potential energy?
a) kQ1Q2/r
b) V=IR
c) F=qE
d) P=VI
Answer: a) kQ1Q2/r
Explanation: The formula for electric potential energy is kQ1Q2/r, where k is the Coulomb constant, Q1 and Q2 are the magnitudes of the charges, and r is the distance between them.
14. Which law states that the induced electromotive force (EMF) in a circuit is proportional to the rate of change of magnetic flux through the circuit?
a) Faraday’s law
b) Ampere’s law
c) Ohm’s law
d) Kirchhoff’s law
Answer: a) Faraday’s law
Explanation: Faraday’s law of electromagnetic induction states that the induced electromotive force (EMF) in a circuit is proportional to the rate of change of magnetic flux through the circuit.
15. Which type of lens is thicker at the center than at the edges?
a) Concave lens
b) Convex lens
c) Plano-concave lens
d) Plano-convex lens
Answer: b) Convex lens
Explanation: A convex lens is thicker at the center than at the edges and is used to converge light rays.
16. What is the unit of frequency?
a) Hertz
b) Meter
c) Second
d) Pascal
Answer: a) Hertz
Explanation: The unit of frequency is hertz (Hz), which is defined as the number of cycles per second.
17. Which law states that the current flowing through a conductor is directly proportional to the voltage applied across it, provided the temperature and other physical conditions remain constant?
a) Faraday’s law
b) Ampere’s law
c) Ohm’s law
d) Kirchhoff’s law
Answer: c) Ohm’s law
Explanation: Ohm’s law states that the current flowing through a conductor is directly proportional to the voltage applied across it, provided the temperature and other physical conditions remain constant.
18. What is the SI unit of electric charge?
a) Ampere
b) Coulomb
c) Volt
d) Ohm
Answer: b) Coulomb
Explanation: The SI unit of electric charge is the coulomb (C), which is defined as the amount of charge carried by a current of one ampere in one second.
19. Which type of wave does not require a medium for its propagation?
a) Sound wave
b) Light wave
c) Water wave
d) Seismic wave
Answer: b) Light wave
Explanation: Light waves are electromagnetic waves and do not require a medium for their propagation.
20. What is the formula for the frequency of a wave?
a) v=fλ
b) E=hf
c) F=ma
d) P=VI
Answer: b) E=hf
Explanation: The formula for the frequency of a wave is f=E/h, where E is the energy of a photon and h is the Planck’s constant.
21. Which type of mirror is used in car headlights?
a) Concave mirror
b) Convex mirror
c) Plane mirror
d) Spherical mirror
Answer: b) Convex mirror
Explanation: Convex mirrors are used in car headlights because they provide a wider field of view and can help to reduce blind spots.
22. What is the SI unit of work?
a) Joule
b) Watt
c) Newton
d) Pascal
Answer: a) Joule
Explanation: The SI unit of work is the joule (J), which is defined as the amount of energy transferred when a force of one newton acts over a distance of one meter.
23. What is the formula for acceleration due to gravity?
a) F=ma
b) F=G(m1m2)/r^2
c) a=v^2/r
d) g=Gm/r^2
Answer: d) g=Gm/r^2
Explanation: The formula for acceleration due to gravity is g=Gm/r^2, where G is the universal gravitational constant, m is the mass of the object, and r is the distance from the center of the object.
24. What is the formula for the period of a pendulum?
a) T=2π√(L/g)
b) T=2π√(g/L)
c) T=2π√(Lm/g)
d) T=2π√(g/mL)
Answer: a) T=2π√(L/g)
Explanation: The formula for the period of a pendulum is T=2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity.
25. Which law states that the total energy of a closed system remains constant over time?
a) Newton’s first law
b) Newton’s second law
c) Newton’s third law
d) The law of conservation of energy
Answer: d) The law of conservation of energy
Explanation: The law of conservation of energy states that the total energy of a closed system remains constant over time. This means that energy cannot be created or destroyed, only transferred or converted from one form to another.
Initiating the Physics Quiz
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Unveiling the World of Physics GK Questions
Understanding Physics
Physics, the study of matter, motion, and energy, is a fundamental scientific discipline. Its primary goal is to comprehend the behavior of the universe on various scales, from the microscopic to the macroscopic.
Importance of Physics
- Inspiration to Study Nature: Physics is a discipline that instills a passion for understanding the natural world.
- Foundation for Technological Advances: It lays the groundwork for future technological breakthroughs.
- Crucial in Education: Physics is essential for the education of chemists, engineers, computer scientists, and professionals in various scientific fields.
- Interdisciplinary Impact: Physics enhances our understanding of other disciplines, such as earth sciences, agriculture, chemistry, biology, and the environment.
- Improves Quality of Life: Physics contributes to advancements that enhance our quality of life.
Benefits of Engaging in Physics Quiz Practice
- Comprehensive Learning: The Physics Quiz covers 25 questions, ensuring a thorough exploration of key concepts.
- Time Management Skills: The quiz enforces a time limit, allowing self-assessment of time allocation for each question.
- Focused Attention: Concentrate on each question presented on the screen during the Physics Online Test.
- Immediate Results: Receive instant results post-quiz completion, providing scores and grade points.
- Explanatory Guide: Detailed explanations accompany unanswered questions, aiding in comprehension.
- Competitive Edge: The quiz acts as a competitive test, honing skills in various technologies.
- Accurate Insights: Gain precise answers and explanations, serving as a comprehensive guide.
- Conceptual Improvement: Enhance knowledge in physics, understanding current affairs and global developments
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