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## Guess Paper Physics Class 10

### Physics Class 10 Important Short Questions

- Define vibratory motion.
- Define restoring force.
- Define spring constant. Write its formula.
- What is meant by a simple pendulum? Write the formula of its time period.
- If the time period of a simple pendulum is 1.99s then find its frequency.
- Define simple harmonic motion.
- Define the time period.
- What is meant by wavelength?
- What is meant amplitude?
- What is the difference between vibration and frequency?
- Write two characteristics of simple harmonic motion.
- Define mechanical waves. And write the names of its types.
- What are longitudinal waves? Also, give one example.
- What is the difference between transverse and longitudinal waves?
- Define wave equation. And write its formula.
- The frequency of a wave moving on a slinky is 4 Hz and the wavelength is 0.4m. Find its speed.
- What is a stethoscope?
- What is meant by the loudness of sound?
- The sound of women is shriller than men. Why?
- What is the difference between frequency and pitch?
- Define pitch and quality of sound.
- What is meant by sound less whistle? What is the range of its frequency?
- What is meant by the intensity of sound? What is its unit?
- What is the difference between loudness and intensity of sound?
- Write the mathematical relation between loudness and intensity of sound.
- What is meant by decibel scale?
- What are the audible frequency ranges?
- Write down the audible frequency ranges for children and old people.
- Explain the concave mirror and convex mirror by a diagram.
- Define the center of curvature and radius of curvature.
- Define mirror formula.
- State the laws of refraction.
- Write Snell’s law. And write its formula.
- What are the values of the refractive index for water and ice?
- Define refractive index.
- What is the critical angle?
- What is a convex or converging lens? Explain by a diagram.
- Define principle focus and focal length.
- What is meant by the power of a lens? Also, write its formula.
- The power of a convex lens is 5D. Find its focal length.
- Differentiate between real and virtual images.
- What is meant by electrostatic induction?
- State Coulomb’s law.
- What is the effect of distance on Coulomb’s force? Describe.
- In System International, what is the value of k in Coulomb’s law?
- Define electric field. Write its unit.
- .Define electric field intensity.
- Is electric field intensity a vector quantity? What will be its direction?
- Define electric field lines. Who introduced them?
- Write down two characteristics of electric field lines.
- Define electric potential. Write its unit.
- Define volt.
- Write the formula of electric potential energy.
- Who and when the first battery was discovered?
- What is the difference between a capacitor and a dielectric?
- Define capacitance. Write its unit.
- Write down two characteristics of the series combination of capacitors.
- What is meant by dielectric?
- Write down two uses of capacitors.
- What is a filter circuit?
- Write the names of different types of capacitors.
- Define variable capacitors.
- Define fixed capacitors.
- What is meant by an electrolytic capacitor?
- What is meant by Mica capacitor?
- What is the SI unit of electric current? Define it.
- Define electric current. Write its mathematical formula.
- What is meant by the conventional current?
- What is the difference between the flow of current and water?
- Which instruments are used to measure current?
- What is the difference between a galvanometer and an ammeter?
- What is an electrolyte?
- The diameter of a copper wire is 2mm. find its cross-sectional area.
- What is the SI unit of potential difference? Define it.
- What is the difference between electromotive force and potential difference?
- State Ohm’s law. Write its mathematical formula.
- What is meant by resistance? Write its unit.
- Define the SI unit of resistance.
- The resistance of the conductor increases by increasing the temperature. Why?
- What is meant by Ohmic and Non Ohmic conductors?
- State Joule’s law. Write its mathematical formula.
- What is the difference between kilowatt hours and electric power?
- Write down the difference between watt and kilowatt hours.
- Define electric power. Write down its equation.
- Describe the right-hand rule.
- What is meant by solenoid?
- Who discovered the magnetic field produced around a straight current-carrying conductor?
- Write two methods of increasing magnetic force.
- What is meant by electromagnetic induction?
- State the law of electromagnetic induction of Faraday.
- State Lenz’s law of induced emf.
- What is the difference between a step-up and a step-down transformer?
- Differentiate between digital and analog quantities.
- What is meant by analog quantities? Give example.
- Differentiate between analog and digital electronics.
- Write the uses of digital electronics.
- What is a digital-to-analog converter?
- Write the advantages of uses of digital electronics over analog electronics.
- What is meant by DAC and ADC?
- What is meant by digital electronics? Give an example.
- What is meant by binary variable?
- What is meant by logic algebra or Boolean algebra? How is intended?
- What is meant by the logical state?
- Which are three universal logic gates?
- Write the names of logic operations.
- Define truth table.
- What is meant by AND operation? Write its symbol.
- Write the truth table of the AND operation.
- Write the symbol of the AND gate.
- Draw a circuit diagram for the AND gate.
- What is meant by OR operation? Write its symbol.
- Draw a circuit diagram for the OR gate.
- What is meant by NOT operation? Write its symbol.
- Write the truth table of NOT operation.
- Write the symbol of NOT gate.
- Write the truth table of the NOR operation.
- Write the symbol of the NOR gate.
- Write the use of logic gates.
- Define data.
- Define information.
- Define information technology.
- Define telecommunication.
- Write two uses of computers in our daily life.
- What is meant by CPU? Why is it called the brain of a computer?
- Write the names of four input devices in a computer.
- What are Supercomputers?
- How light signal is sent through optical fibers?
- What is meant by the internet?
- Write down the services of the internet.
- What is electronic mail?
- Write down two uses of E-mail.
- What are browsers?
- Define the operating system. Also, give an example.
- What is E-commerce?
- What are the two important services used on the Internet?
- What is meant by ATM?
- Write the names of four web browsers.
- What is a global web?
- What is meant by isotopes?
- A nuclide is represented by the symbol 13×6. Find the number of protons and neutrons in it.
- What is meant by neutron number?
- Differentiate between atomic number and neutron number.
- What is meant by isotope? How many isotopes hydrogen has?
- What is meant by natural radioactivity?
- What is meant by radioactive elements? Give examples.
- Write a short note on cosmic radiations.
- What is meant by cosmic radiation?
- Write down the causes of background radiations.
- What is meant by nuclear transmutation?
- What is meant by penetrating ability?
- Write down two characteristics of beta radiations.
- Write two characteristics of gamma rays.
- Write down two characteristics of alpha radiations.
- Write the general equation of beta Decay. Also, give an example.
- What is meant by the half-life of a radioactive element?
- What is meant by half-life?
- Write two uses of radioisotopes.
- What is meant by radioactive tracers?
- What is the use of radioactive isotopes in medical treatment?
- What is meant by carbon dating?
- What is meant by tracers?
- Differentiate between stable and unstable nuclei.
- Define nuclear fission.
- Write down the equation of nuclear fission.
- What is meant by Fission chain reaction?

### Physics Class 10 Important Long Questions

- Define the mass of spring by Hook’s law. Define spring constant by Hook’s law.
- Define simple harmonic motion. Prove that the motion of a mass attached to a spring on a horizontal surface is simple harmonic motion.
- The time period of a simple pendulum is 2s. what will be its length on the earth? What will be its length on the moon if gm=ge/6? Where ge=10ms-2.
- A pendulum of length 0.99m is taken to the moon by an astronaut. The period of the pendulum is 4.9 s. What is the value of g on the surface of the moon?
- A simple pendulum completes one vibration in two seconds. Calculate its length when .𝑔 = 10𝑚𝑠−1
- Draw a transverse wave having an amplitude of 2cm and a wavelength of 4cm. Label a crest and trough on the wave.
- Derive a relationship between the velocity, frequency, and wavelength of a wave. Write a formula relating the velocity of a wave to its time period and wavelength.
- Define mechanical waves. Describe its types. Also, give an example of each.
- If 100 waves pass through a point of a medium in 20 seconds, what are the frequency and the time period of the wave? If its wavelength is 6cm, calculate the wave speed.
- What is the wavelength of the radio waves transmitted by an FM station at 90MHz? Where 1M=106, and the speed of the radio wave is 3x108ms-1.
- What is the difference between the loudness of sound and the intensity of sound? Write the mathematical relation between them.
- A normal conversation involves sound intensities of about 3.0 × 10
^{−6}𝑊𝑚^{−2}. What is the decibel level for this intensity? What is the intensity of the sound for 100dB? - At Anarkali Bazaar, Lahore, the intensity level of sound is 80dB, what will be the intensity of sound there?
- At a particular temperature, the speed of sound in air is 330ms
^{-1}. If the wavelength of a note is 5cm, calculate the frequency of the sound wave. Is this frequency in the audible range of the human ear? - A doctor counts 72 heartbeats in 1min. calculate the frequency and period of the heartbeats.
- A student clapped his hands neat a cliff and heard the echo after 5s. what is the distance of the cliff from the students if the speed of the sound is taken as 346ms
^{-1}? - A sound wave has a frequency of 2kHz and a wavelength of 35cm. How long will it take to travel 1.5km?
- Find the frequency of sound, when the speed of sound is 340ms
^{-1}and the wavelength is 0.5m. - An object 10.0cm in front of a convex mirror forms an image 5.0cm behind the mirror. What is the focal length of the mirror?

## 10th Class All Subjects Guess Papers

## Pairing Scheme of Class 10

**Schemes of Matric and Intermediate**