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Concise Physics Class 10 Solutions offer a structured approach to mastering key topics in physics. These solutions simplify complex concepts, helping students grasp difficult ideas with ease. With step-by-step explanations and examples, learners can build a solid foundation for exams and practical applications. Make physics simple and enjoyable today!

Concise Physics Class 10 Solutions: Questions & Answers

For the 50 sample questions and answers, here are 20 questions for physics:

1. What is the difference between speed and velocity?
2. How does acceleration differ from velocity?
3. What is Newton's first law of motion?
4. Explain the law of conservation of momentum.
5. Define work in terms of physics.
6. What is the formula for kinetic energy?
7. How does the gravitational force affect objects on Earth?
8. What is the relationship between force and acceleration?
9. Describe the different types of energy.
10. What is Ohm’s law?
11. Explain the concept of electric current.
12. What is the role of resistance in an electrical circuit?
13. What is the difference between an insulator and a conductor?
14. How does a magnetic field affect a charged particle?
15. Define the term “refraction” in physics.
16. What is the formula for the refractive index?
17. What is the difference between longitudinal and transverse waves?
18. Explain the concept of frequency in waves.
19. What is the principle behind hydraulic lifts?
20. What are the uses of lenses in daily life?

1. Here are 20 more sample questions and answers for Concise Physics Class 10 Solutions:

   21. What is the difference between static electricity and current electricity?
   22. Define potential energy with an example.
   23. What is the principle of moments?
   24. How is the efficiency of a machine calculated?
   25. What is the difference between elastic and inelastic collisions?
   26. What is the formula for calculating power in terms of work and time?
   27. How does a convex lens differ from a concave lens?
   28. Explain the process of thermal conduction.
   29. What is the unit of electric charge?
   30. How do you calculate the electric potential energy of a charged body?
2.  
   21. What is the principle behind the working of a transformer?
   22. How does an electromagnet work?
   23. What is the difference between AC and DC current?
   24. Define specific heat capacity.
   25. What is the use of a fuse in an electric circuit?
   26. How does the wavelength of light affect its refractive index?
   27. What is the energy transformation in an electric fan?
   28. How does sound travel through different media?
   29. What are the main components of an electric motor?
   30. Define magnetic flux and its unit.

Great! Here are the answers to the questions you've provided for Concise Physics Class 10 Solutions:

1. Difference between static electricity and current electricity:

   • Static Electricity: It refers to the accumulation of electric charge on the surface of an object, which remains stationary.
   • Current Electricity: It involves the flow of electric charge (electrons) through a conductor, typically in the form of an electric current.

2. Potential Energy:

   • Potential energy is the energy possessed by an object due to its position or condition. For example, a book placed on a shelf has potential energy because of its height from the ground.

3. Principle of Moments:

   • The principle of moments states that for an object to be in equilibrium, the sum of the clockwise moments must equal the sum of the anticlockwise moments about any point.

4. Efficiency of a Machine:

   • Efficiency is calculated as the ratio of useful work output to the total work input, expressed as a percentage:
     Efficiency=(Useful work outputTotal work input)×100%\text{Efficiency} = \left(\frac{\text{Useful work output}}{\text{Total work input}}\right) \times 100 \%Efficiency=(Total work inputUseful work output​)×100%

5. Elastic and Inelastic Collisions:

   • Elastic Collision: In this collision, both momentum and kinetic energy are conserved.
   • Inelastic Collision: In this type of collision, momentum is conserved, but kinetic energy is not.

6. Formula for Power (Work and Time):

   • Power is the rate at which work is done or energy is transferred. The formula is: P=WtP = \frac{W}{t}P=tW​ Where $P$ is power, $W$ is work done, and $t$ is the time taken.

7. Convex and Concave Lenses:

   • Convex Lens: It is thicker at the center and converges light rays passing through it.
   • Concave Lens: It is thinner at the center and diverges light rays passing through it.

8. Thermal Conduction:

   • Thermal conduction is the process by which heat energy is transferred through a material from the high-temperature region to the low-temperature region without the movement of the material itself.

9. Unit of Electric Charge:

   • The unit of electric charge is the Coulomb (C).

10. Electric Potential Energy:

    • The electric potential energy of a charged body is given by: U=KQ1Q2rU = \frac{KQ_1Q_2}{r}U=rKQ1​Q2​​ Where $U$ is the potential energy, $K$ is Coulomb’s constant, Q1Q_1Q1​ and Q2Q_2Q2​ are the charges, and $r$ is the distance between the charges.

11. Working Principle of a Transformer:

    • A transformer works on the principle of electromagnetic induction. It increases or decreases the voltage of alternating current (AC) without changing its frequency.

12. Electromagnet:

    • An electromagnet works by passing electric current through a coil of wire wrapped around a ferromagnetic core, which generates a magnetic field.

13. Difference between AC and DC Current:

    • AC (Alternating Current): The current changes direction periodically.
    • DC (Direct Current): The current flows in only one direction.

14. Specific Heat Capacity:

    • Specific heat capacity is the amount of heat energy required to raise the temperature of 1 kg of a substance by 1°C.

15. Use of a Fuse:

    • A fuse is used in an electric circuit to protect the circuit from overcurrent by breaking the connection when the current exceeds a certain level.

16. Wavelength and Refractive Index:

    • The refractive index of a medium decreases with an increase in the wavelength of light.

17. Energy Transformation in an Electric Fan:

    • In an electric fan, electrical energy is converted into mechanical energy (motion) and then into heat energy due to friction.

18. Sound Travel through Different Media:

    • Sound travels through solids, liquids, and gases. It travels fastest through solids and slowest through gases because the density of the medium affects sound propagation.

19. Main Components of an Electric Motor:

    • The main components are the rotor, stator, armature, commutator, and brushes.

20. Magnetic Flux and its Unit:

    • Magnetic flux is the measure of the total magnetic field passing through a given area. Its unit is the Weber (Wb).
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21. 21. What is the difference between conduction, convection, and radiation?
    • Conduction: It is the transfer of heat through a solid without the movement of the material. For example, when one end of a metal rod is heated, the other end also gets hot due to conduction.
    • Convection: It is the transfer of heat in liquids and gases by the movement of the fluid itself. Hot air rises, and cold air sinks, creating convection currents.
    • Radiation: It is the transfer of heat in the form of electromagnetic waves. Unlike conduction and convection, radiation does not require a medium to transfer heat (e.g., the heat from the Sun reaches Earth via radiation).
    22. What is Ohm's Law?
    • Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance. The formula is: $V=IR$ Where $V$ is the voltage, $I$ is the current, and $R$ is the resistance.
22. 23. What is the relation between current, voltage, and resistance?
    • The relation between current, voltage, and resistance is given by Ohm's Law, which states that: $V=IR$ Where $V$ is the voltage, $I$ is the current, and $R$ is the resistance.
    24. Define electric power and give its formula.
    • Electric power is the rate at which electrical energy is consumed or produced in a circuit. It is calculated using the formula: $P=VI$ Where $P$ is power (in watts), $V$ is voltage (in volts), and $I$ is current (in amperes).
    25. What is the principle of the working of a bar magnet?
    • A bar magnet works on the principle that opposite poles attract and like poles repel. The magnetic field is generated by the motion of electric charges, and the two poles of a bar magnet, the north and south poles, interact according to this principle.
    26. What is the role of a capacitor in an electric circuit?
    • A capacitor stores electrical energy in an electric field and releases it when required. It helps smooth out fluctuations in voltage and can also be used for filtering in power supply circuits.
    27. What is the difference between a primary and a secondary cell?
    • Primary Cell: A primary cell is a type of battery that cannot be recharged once the chemicals inside are exhausted (e.g., dry cell).
    • Secondary Cell: A secondary cell can be recharged and used multiple times (e.g., lead-acid battery, lithium-ion battery).
    28. Explain the phenomenon of refraction of light.
    • Refraction is the bending of light as it passes from one medium to another with a different refractive index. This occurs because light travels at different speeds in different media. For example, when light passes from air to water, it bends towards the normal.
    29. What is the working principle of an electric bulb?
    • The working principle of an electric bulb is based on the heating effect of electric current. When current passes through the filament of the bulb, it heats up and glows, emitting light.
    30. What is the importance of the earth's magnetic field?
    • The earth's magnetic field protects life on Earth by deflecting charged particles from the solar wind, which would otherwise strip away the planet's atmosphere. It also helps in navigation using a compass.

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