Posts

Pinned Post 📌

steam engine to dream engine

Image
Hi guys Let me introduce you a very special topic i.e. From steam engine to dream engine. The technological and continuous transformation has opened various ways with boundless possibilities. Industrial revolution sparked by steam engine has taken steps towards digital revolution driven by artificial intelligence. So let's learn about the journey travelled by engine which helped us to enhance our daily lives and make the world a single family by means of globalisation. It is the symbol of the progress of development and innovation for humanity. The birth of steam engine The steam engine invented in late 17th century . Before it's innovation human labour and animal power was the primary source of energy. Firstly it was developed by Thomas newcomens in the early 17th century which is used to pump water out of mines. After that in the 1760s it is the James Watt who makes a improvement in it and add seperate condenser and rotary motion due to which use of the engine enh...

electric charges and field

Image
  Electrical Charges and Fields Electricity is a fundamental aspect of our modern life. From powering our homes to providing energy to our electronic devices, electricity is everywhere. In this comprehensive guide, we will break down the science of electrical charges and fields in simple terms. We will also provide some helpful formulas to help you understand how to calculate electric fields. Whether you’re a student studying physics or an engineer working with electrical systems, this guide will give you the tools you need to truly understand the science behind electrical charges and fields. 1. What are electrical charges and fields? Electricity is a phenomenon that has fascinated scientists for centuries. Electrical charges and fields are concepts that are central to our understanding of electricity. At the most basic level, electrical charges are the fundamental building blocks of electricity . All matter is made up of atoms, which are made up of protons, neutrons, a...

Waves

Image
Hi guys today we are going to solve 25 MCQ based on waves. The question are informative in nature.I will try to explain each question at my understanding level. 1. Which of the following statements is correct about transverse waves? A) The oscillation of the particles is parallel to the direction of wave propagation. B) The oscillation of the particles is perpendicular to the direction of wave propagation. C) Transverse waves can only travel through solid media. D) Transverse waves can only travel through liquid media. Answer: B) The oscillation of the particles is perpendicular to the direction of wave propagation. Explanation: In transverse waves, the oscillation of the particles is perpendicular to the direction of wave propagation. Examples of transverse waves include electromagnetic waves, such as light waves and radio waves, as well as waves on a string. 2. Which of the following statements is correct about longitudinal waves? A) The oscillation of the particles is pa...

30 MCQ - Oscillation

Image
25 MCQ based on oscillation with answer and explanation. 1. Which of the following is the correct definition of oscillation? A. Motion that occurs in a straight line B. Motion that occurs in a circular path C. Periodic motion that repeats itself after a fixed interval of time D. Motion that occurs in a random direction Answer: C. Periodic motion that repeats itself after a fixed interval of time. Explanation: Oscillation is defined as a repetitive motion that occurs around an equilibrium point, where the system moves back and forth periodically. 2. Which of the following is an example of an oscillatory motion? A. A car moving in a straight line B. A ball rolling down a hill C. A pendulum swinging back and forth D. A rocket launching into space Answer: C. A pendulum swinging back and forth. Explanation: A pendulum is an example of an oscillatory motion, where the motion repeats itself after a fixed interval of time. 3. Which of the following is not a characteristic of oscill...

MCQ - System of particles and rotational motion

Image
 30 MCQ question based on system of particles and rotational motion with answer and explanation  1. Which of the following quantities is a vector quantity? a) Angular velocity b) Angular displacement c) Angular acceleration d) Moment of inertia Answer: a) Angular velocity Explanation: Angular velocity is a vector quantity because it has both magnitude and direction. 2. The unit of moment of inertia is: a) Kg/m^2 b) Kgm^2 c) m^2/Kg d) m^2/s^2 Answer: b) Kgm^2 Explanation: Moment of inertia is the rotational analogue of mass and is measured in Kg*m^2. 3. Which of the following statements is true regarding angular acceleration? a) It is a scalar quantity b) It is measured in radians per second c) It is the rate of change of angular velocity d) It is given by the formula F=ma Answer: c) It is the rate of change of angular velocity Explanation: Angular acceleration is the rate of change of angular velocity and is measured in radians per second squared. 4. Which of the f...

speed, time and distance

Image
Hi guys today we are going to explore  30 advance MCQ question based on speed time and distance with answer and explanation. 1. A train travels at 60 km/h for the first 2 hours, at 80 km/h for the next 3 hours, and at 50 km/h for the last 4 hours. What is the average speed of the train for the entire journey? A) 56.4 km/h B) 62.5 km/h C) 68.8 km/h D) 72.6 km/h Answer: B) 62.5 km/h Explanation: The total distance covered by the train is 260 + 380 + 4*50 = 460 km. The total time taken is 2 + 3 + 4 = 9 hours. Therefore, the average speed of the train is 460/9 = 51.1 km/h. 2. A car travels at 60 km/h for the first 3 hours, at 80 km/h for the next 2 hours, and at 50 km/h for the last 4 hours. What is the average speed of the car for the entire journey? A) 51.1 km/h B) 56.4 km/h C) 62.5 km/h D) 68.8 km/h Answer: C) 62.5 km/h Explanation: The total distance covered by the car is 360 + 280 + 4*50 = 460 km. The total time taken is 3 + 2 + 4 = 9 hours. Therefore, the average spee...

kinetic theory of gases

Image
Exploring the Kinetic Theory of Gases: A Comprehensive Guide with Formulas and Examples The kinetic theory of gases is a fundamental concept in physics that explains how gases behave under various conditions. It is a powerful tool for understanding the behavior of gases and their properties. The theory is based on the idea that gases consist of a large number of tiny particles that are in constant random motion. This motion is responsible for the properties of gases such as pressure, temperature, volume, and density. If you are curious about the kinetic theory of gases and want to learn more about it, then you are in the right place. In this comprehensive guide, we will explore the fundamentals of the kinetic theory of gases, its formulas, and provide various examples to help you understand the theory thoroughly. So, whether you are a student or a seasoned physicist, this guide will help you master the kinetic theory of gases. 1. Introduction to the Kinetic Theory of Gases ...