| Q1. Write short answers to the following questions. (10th Physics – Important SQs) |
| 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 the simple pendulum is 1.99s then find its frequency. |
| Define simple harmonic motion. |
| Define time period. |
| What is meant by wave length? |
| 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 wavelength is 0.4m. Find its speed. |
| What is a stethoscope? |
| What is meant by the loudness of sound? |
| The sound of women is more shrill than men. Why? |
| What is the difference between frequency and pitch? |
| Define pitch and quality of sound. |
| What is meant by a soundless 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 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 a critical angle? |
| What is a convex or converging lens? Explain by a diagram. |
| Define principal 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. |
| 100.Write down two characteristics of the series combination of acitors. |
| 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 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 hour and electric power? |
| Write down the difference between watt and kilowatt hour. |
| Define electric power. Write down its equation. |
| Describe 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 step up and step down transformer? |
| Differentiate between digital and analogue quantities. |
| What is meant by analogue quantities? Give example. |
| Differentiate between analogue and digital electronics. |
| Write the uses of digital electronics. |
| What is digital to analogue converter? |
| Write the advantages of uses of digital electronics over analogue 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 itsented? |
| What is meant by logic 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 truth table of AND operation. |
| Write the symbol of AND gate. |
| Draw circuit diagram for AND gate. |
| What is meant by OR operation? Write its symbol. |
| Draw circuit diagram for OR gate. |
| What is meant by NOT operation? Write its symbol. |
| Write truth table of NOT operation. |
| Write the symbol of NOT gate. |
| Write truth table of NOR operation. |
| Write the symbol of NOR gate. |
| Write the use of logic gates. |
| Define data. |
| Define information. |
| Define information technology. |
| Define telecommunication. |
| Write two uses of computer in our daily life. |
| What is meant by CPU? Why is it called the brain of computer? |
| Write the names of four input devices in computer. |
| What are Super computers? |
| How light signal is sent through optical fibers? |
| What is meant by internet? |
| Write down the services of internet. |
| What is electronic mail |
| Write down two uses of E mail. |
| What are browsers? |
| Define operating system? Also give an example. |
| What is E commerce? |
| What are the two important services used in internet? |
| What is meant by ATM? |
| Write the names of four web browsers. |
| What is global web? |
| What is meant by isotopes? |
| A nuclide is represented by symbol 13X6. 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 radiations? |
| 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 general equation of beta Decay. Also give an example. |
| What is meant by half life of a radio active element? |
| What is meant by half life? |
| Write two uses of radio isotopes. |
| What is meant by radio active tracers? |
| What is the use of radio active 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 a Fission chain reaction? |
