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Physics chapter 20 important Mcqs for Fsc Students

 ðŸ“˜ Physics Chapter 20 – MCQs Q1: Unit of magnetic flux is? A) Tesla B) Weber ✅ C) Volt D) Ampere Q2: Transformer works on? A) Ohm’s law B) Faraday’s law ✅ C) Newton’s law D) Coulomb’s law Q3: AC current changes? A) Magnitude B) Direction C) Both ✅ D) None Q4: Generator converts? A) Electrical → Mechanical B) Mechanical → Electrical ✅ C) Heat → Electrical D) Light → Electrical Q5: Lenz’s law is related to? A) Direction of current ✅ B) Voltage C) Resistance D) Power Q6: Step-up transformer increases? A) Current B) Voltage ✅ C) Resistance D) Power Q7: Magnetic flux depends on? A) Area B) Magnetic field C) Angle D) All ✅ Q8: DC current flows in? A) Both directions B) One direction ✅ C) Circular 🔢 Numericals (Simple Type) ❓ Q1: Magnetic flux = 0.02 Wb, time = 0.01 s Find induced EMF Ans: EMF = Φ / t = 0.02 / 0.01 = 2 V ❓ Q2: Primary turns = 100, Secondary = 200 Input voltage = 10V Find output voltage Ans: Vs/Vp = Ns/Np Vs/10 = 200/100 Vs = 20V D) None
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Physics Chapter 20 Important Short Questions with Answers

 ❓ Q1: What is magnetic flux? Ans: Magnetic field lines passing through a surface is called magnetic flux. ❓ Q2: What is unit of magnetic flux? Ans: Weber (Wb). ❓ Q3: What is electromagnetic induction? Ans: Production of current in a conductor due to changing magnetic field. ❓ Q4: State Faraday’s law. Ans: Induced EMF is proportional to rate of change of magnetic flux. ❓ Q5: What is Lenz’s law? Ans: Direction of induced current opposes the change causing it. ❓ Q6: What is transformer? Ans: Device used to increase or decrease voltage. ❓ Q7: What are types of transformer? Ans: Step-up and Step-down transformer. ❓ Q8: What is AC current? Ans: Current that changes direction continuously. ❓ Q9: What is DC current? Ans: Current that flows in one direction. ❓ Q10: What is generator? Ans: Device that converts mechanical energy into electrical energy. ❓ Q11: What is mutual induction? Ans: Induction of current in one coil due to change in current in another coil. ❓ Q12: What is self inductio...
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📘 Biology Chapter 19 – Short Questions with Answers

 Q1: Coordination kya hoti hai? Ans: Body ke different parts ka mil kar kaam karna coordination kehlata hai. ❓ Q2: Nervous system ka main function kya hai? Ans: Body ke functions ko control aur coordinate karna. ❓ Q3: Neuron kya hota hai? Ans: Nerve cell jo impulses transmit karta hai. ❓ Q4: Reflex action kya hota hai? Ans: Instant aur automatic response bina sochay samjhay. ❓ Q5: Brain ke main parts kaun se hain? Ans: Cerebrum, Cerebellum, Medulla oblongata. ❓ Q6: Hormones kya hotay hain? Ans: Chemical messengers jo endocrine glands se release hotay hain. ❓ Q7: Pituitary gland ko master gland kyu kehte hain? Ans: Kyun ke ye dusri glands ko control karti hai. ❓ Q8: Thyroxine hormone ka function kya hai? Ans: Metabolism ko regulate karta hai. ❓ Q9: Insulin ka kya kaam hai? Ans: Blood sugar level ko control karta hai. ❓ Q10: Adrenaline hormone kab release hota hai? Ans: Stress ya emergency situation me. ❓ Q11: Synapse kya hota hai? Ans: Do neurons ke darmiyan gap jahan impulse transf...
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Biology Chapter 18 important questions for Fsc Students

 Biology Chapter 18 Short Questions with Answers Q1: What is endocrinology? 👉 Endocrinology is the study of hormones and endocrine glands. Q2: What are hormones? 👉 Hormones are chemical messengers secreted by endocrine glands. Q3: What is the function of pituitary gland? 👉 It controls other endocrine glands and is called master gland. Q4: Name the thyroid hormone. 👉 Thyroxine. Q5: What is the function of insulin? 👉 It regulates blood glucose level. Q6: What is diabetes? 👉 A disease caused by deficiency of insulin. Q7: What is adrenaline? 👉 A hormone released in stress or emergency. Q8: What is feedback mechanism? 👉 It regulates hormone secretion. Q9: Name male sex hormone. 👉 Testosterone. Q10: Name female sex hormone. 👉 Estrogen.
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Physics chapter 19 important questions for Fsc Students Lahore board

 Define Magnetic Field. Answer: Magnetic field wo region hai jahan magnetic force kisi magnetic material ya moving charge par act karta hai. State the direction of magnetic field around a current-carrying conductor. Answer: Right-hand thumb rule ke mutabiq: Thumb current ki direction me rakho, fingers magnetic field ki direction dikhaengi. What is Electromagnetism? Answer: Electromagnetism wo phenomenon hai jisme current se magnetic field produce hota hai aur magnet ka effect paida hota hai. Define Solenoid. Answer: Solenoid ek coil of wire hai jisme current flow karne par magnetic field create hota hai. Applications of Electromagnet. Answer: Electric bell Crane for lifting metals MRI machines What is Fleming’s Left-Hand Rule? Answer: Ye rule motor effect me force ki direction determine karta hai: Thumb → Motion First finger → Magnetic field Second finger → Current What is Magnetic Flux? Answer: Magnetic flux = total magnetic field passing through a surface Define Faraday’s Law of ...
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Biology Chapter 18 important questions for Fsc Students for Lahore board

 What is Photosynthesis? Answer: Photosynthesis wo process hai jisme green plants sunlight, carbon dioxide aur water ki madad se glucose aur oxygen banate hain. Write the equation of Photosynthesis. Answer: What are Chloroplasts? Answer: Chloroplasts plant cells ke organelles hain jahan photosynthesis hoti hai. Explain the role of Chlorophyll. Answer: Chlorophyll green pigment hai jo sunlight ko absorb karta hai aur photosynthesis me energy provide karta hai. What is Cellular Respiration? Answer: Cellular Respiration wo process hai jisme cells glucose ko energy me convert karte hain. Difference between Aerobic and Anaerobic Respiration. Answer: Aerobic: Oxygen ki presence me hoti hai, zyada energy release hoti hai Anaerobic: Oxygen ke bina hoti hai, kam energy release hoti hai What is Transpiration? Answer: Transpiration wo process hai jisme plants ke leaves se paani water vapor ke form me evaporate hota hai. Define Stomata and its function. Answer: Stomata small pores hote hain le...
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Physics Chapter 17 Important Short Questions | FSc Part 2 Lahore Board

 Physics Chapter 17 – Important Short Questions 1. Define Wave Motion. 2. Types of Waves. 3. What is Wavelength? 4. Define Frequency. 5. Relation between wavelength and frequency. 6. Define Period of a wave. 7. What is Transverse wave? 8. What is Longitudinal wave? 9. Examples of wave motion. 10. Uses of waves in daily life. These short questions are very important for board exams.
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