# 10th Class Guess Paper on Physics (Annual Exam 2020)

10th Class Guess Paper on Physics (Annual Exam 2020). Solved Important Questions for Islamabad Model Schools & Colleges / Federal Board (FBISE) Islamabad. The students of Islamabad Capital Territory (ICT) studying in Islamabad Model Schools & Colleges (ICB, ICG, IMCB, IMCG) can utilize our guess papers with full trust & confidence. These guess papers (Important Questions) are guarantee to get good marks in your annual exams. These guess papers can also be utilized by the students of other boards & schools/colleges of Punjab Province who are studying the same syllabus & course. These papers are prepared as per latest scheme of studies prescribed by Federal Board of Intermediate & Secondary Education, Islamabad (FBISE) and Federal Directorate of Education (FDE), Islamabad having studied all the past papers and through the experience gained from these papers.

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Important Questions:

• What is Simple Harmonic Motion? What are its necessary conditions.
• What are damped oscillation?
• Derive a relationship between Speed, Frequency and Wavelength.
• What do you know about Reflection, Refraction and Diffraction of waves.
• What is vibrational motion?
• What do you know about the damping of shock absorbers of automobiles?
• How pendulum clock was invented?
• Explain the motion of mass attached with a spring on horizontal and friction less plane is simple harmonic.
• Explain waves and its types.
• Give the characteristics of wave motion.
• What is ripple tank? Explain its construction and working.
• Difference between loudness and intensity of sound.
• On what factors loudness depends?
• If we clap or speak in front of a building while standing at a particular distance, we rehear our sound after some time. Explain how does this happens?
• Explain that noise is a nuisance.
• Describe the importance of acoustic protection.
• What are uses of ultrasound in medicines?
• What are uses of ultrasound in technical fields?
• Why two tin can with a string stretched between them could be better way to communicate than merely shouting through air?
• You can listen your friend round a corner, yet you cannot watch him/her. Why?
• Two people are listening to the same music at the same loudness. They disagree on its loudness. Explain how this could happen?
• Is there any difference between echo and reflection of sound? Explain.
• How does stethoscope operates?
• Why silent whistle is used to call dogs?
• How whales can communicate over hundred and thousands miles?
• What is the function of large ears of elephants?
• What are the audible frequency range of bats, mice, dogs, cats and humans?
• What is SONAR? Explain.
• Write the characteristics of sound.
• What is critical angle? Driver relationship between the critical angle and the refractive index of a substance.
• A coin is placed at a focal point of a converging lens. Is an image formed? What is it nature?
• Define power of the lens and its unit.
• Define the terms resolving power and magnifying power.
• Explain different type of technologies used in case of spherical mirrors.
• What is corpuscular nature of light?
• Define magnification of spherical mirrors.
• What is total internal reflection of light?
• What are totally reflecting prism and periscope?
• What is mirage? Explain
• Derive the convex lens formula.
• Write a note on human eye. Also describe near point and far point.
• What are the defects of vision.
• What is gold leaf electroscope? Discuss its working and function/working.
• What is meant by electric field and electric intensity?
• Explain Coulomb’s law of electroscope and write its mathematical form?
• Find the electric intensity due to a point charge “q”.
• How would you define potential difference between two point? Discuss its unit.
• What do you meant by the capacitance? Define units of capacitance.
• What do you meant by the capacitance for a series combination of a number of capacitors?
• Discuss types of capacitors.
• Discuss one application of static electricity.
• An electrified rod attracts of paper. After a while these pieces fly away why?
• What is meant by conventional current?
• How a galvanometer is converted into voltmeter?
• How a galvanometer is converted into ammeter?
• Why resistance of ammeter is kept low?
• Why resistance of the voltmeter is kept high?
• Differentiate between electromotive force and potential difference?
• State and explain ohm’s law write down its limitations?
• Define resistance and its unit
• What are factors upon which the resistance of conductor depends?
• State Joule’s law
• Define Electric Power.
• Define Kilowatt hour.
• What are live and neutral wires?
• Define fuse and write its principal.
• What is circuit breaker and what is its principal?
• What is meant by electromotive force? Write its equation and explain its unit?
• Define and explain the term specific resistance. Discuss different factors which affects the resistance of conductor.
• How are resistances connected in series? What are characteristics of this combination?
• How are resistances connected in parallel? What are characteristics of this combination?
• Describe electric energy and Joule’s law?
• A bird can sit harmlessly on high tension wire. But it must not reach and grab neighbouring wire. Do you know why?
• In order to measure voltage in a circuit, voltmeter is always connected in parallel. Discuss.
• In order to measure current in a circuit, why ammeter is always connected in series.
• Define Fleming’s left hand rule?
• Write a detailed note on D.C motor
• Define Faraday’s law of Electromagnetic Induction.
• Write a note on mutual induction
• Write a note on self induction.
• What is transformer. What are Step down and step up transformers.
• Explain the working of Cathode Ray Oscilloscope (CRO).
• What are three universal logic gates i.e. AND Gate, OR Gate, NOR Gate etc.
• NAND gate is reciprocal of AND gate. Discuss.
• What is Information and Communication Technology?
• How light signals are sent through optical fiber?
• What do you understand by terms Word Processing and Data Managing.
• What is difference between RAM and ROM?
• Write the advantages of Fiber Optic.
• What is difference between FTP and HTTP?
• What is radioactivity. Why some elements are radioactive and some are not?
• How can you make radioactive elements artificial. Give example.
• Describe two uses of radioactive isotopes in medicine, industry and research.
• What nuclear reaction would release more energy? Fission reaction or Fusion reaction.

Other Important Things:

• Objectives
• Numericals
• Diagrams

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