“Prepare for physics excellence with our specialized ’10 Class Physics Notes.’
Customized for the 2023 curriculum, these notes comprehensively address essential concepts and exam patterns, establishing themselves as your primary resource for thorough preparation. Within, discover succinct responses to paper questions, accompanied by diagrams enhancing your comprehension.”
Short Question Answers.
Q1. What is meant by Ultrasonic Waves?
Ans. Ultrasonic Waves:
Ultrasonic waves are sound waves with frequencies above the audible range of human hearing (>20,000 Hz). They find applications in medical imaging, cleaning, and industrial testing.
Q2. What is Endoscope?
Ans. Endoscope:
An endoscope is a medical device with a light and camera used to visualize the interior of hollow organs or cavities, typically in minimally invasive surgeries.
Q3. How an Electric charge is produced?
Ans. Electric Charge Production:
Electric charge is produced by the transfer of electrons between objects, resulting in one object becoming negatively charged and the other positively charged.
Q4. Define Electric current.
Ans. Electric Current:
Electric current is the flow of electric charge in a conductor. It is measured in amperes (A) and is the rate of flow of charge.
Q5. What is meant by Relay and how does it work?
Ans. Relay and its Working:
A relay is an electromechanical switch. It works by using an electromagnet to control the position of a switch, allowing it to open or close an electrical circuit.
Q6. Define Electronics.
Ans. Electronics:
Electronics is a branch of physics and engineering that deals with the study of electrical circuits and devices, especially those using semiconductor components.
Q7. What is Knowledge?
Ans. Knowledge:
Knowledge is information and understanding acquired through experience, education, or awareness.
Q8. What is the term of Isotopes?
Ans. Isotopes:
Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons, resulting in different atomic masses.
Q9. Why convex mirrors are employed for security purposes in large shopping center.
Ans. Convex Mirrors for Security:
Convex mirrors provide a wider field of view and make objects appear smaller, aiding in surveillance and minimizing blind spots in security applications.
Q10. Define Simple Harmonic Motion.
Ans. Simple Harmonic Motion:
Simple Harmonic Motion is a type of mechanical wave motion in which a particle oscillates back and forth around an equilibrium position, following a sinusoidal path.
Q11. What is generator?
Ans. Generator:
A generator is a device that converts mechanical energy into electrical energy. It operates on the principle of electromagnetic induction.
Q12. Write down the symbol and truth table of NAND gate.
Ans. NAND Gate Symbol and Truth Table:
Symbol:
Truth Table:
| A | B | Out |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
Q13. What is Electroscope?
Ans. Electroscope:
An electroscope is a device used to detect and measure electric charge. It typically consists of a metal rod with a freely moving metal vane.
Q14. Write two characteristics of series combination?
Ans. Characteristics of Series Combination:
In a series circuit,
1. The current is the same across all components, and
2. The total resistance is the sum of individual resistances.
Q15. Define crest and trough.
Ans. Crest and Trough:
In a wave, the crest is the highest point, and the trough is the lowest point. These terms are often used in the context of transverse waves.
