Jee advance revision practice problems Click here&nb...
Wednesday, 28 October 2020
Tuesday, 27 October 2020
Monday, 26 March 2018
Momentum notes of class 9
MOMENTUM, Chapter Notes, Class 9, Science
Created by: Suraj Gour
Forces and Laws of Motion
MOMENTUM
Momentum is the power of motion of an object.
The product of velocity and mass is called the momentum. Momentum is denoted by ‘p’.
Therefore, momentum of the object = Mass x Velocity.
Or, p = m x v
Where, p = momentum, m = mass of the object and v = velocity of the object.
Consider the following explanations to understand the momentum:
A...
Monday, 12 March 2018
Sources of energy
Classification of Sources of Energy, Fossil Fuels, Hydro and Wind Energy, Class 10, ScienceSources Of Energy
Good Sources of Energy
A good source of energy would be one :
1. Which would do a large amount of work per unit volume or mass.
2. Be easily accessible
3. Be easy to store and transport.
4. The source of energy has to be economical.
Classification of Sources of Energy
We can classify energy sources in different ways. One classification is based on the reserves (supply) of an energy source. Another is based on how long we have been...
Magnetic effect of electric current
Magnetic Effect of Electric Current Class 10 Notes
➣ Magnet: (i) is an object that attracts objects made of iron, cobalt & nickel. (ii) Comes to rest in North-South direction, when suspended freely.
➣ Magnets are used: (i) In radio & stereo speakers, (ii) In refrigerator doors, (iii) on audio &
video cassettes players, (iv) On hard discs & floppies of computers & (v) in children‘s toys.
➣ Magnetic field: The area around a magnet where a magnetic force is experienced is called...
Electricity class 10 th
Introduction to Electricity - Electricity, Class 10, Science
Electricity
The source of all electricity is charge. As charge is the basis of all electrical phenomena, we need to know the amount of charge on a body. It is measured in coulombs. The coulomb is the SI unit of charge and its symbol is C.
Matter is generally made of protons, electrons and neutrons. Each proton carries a charge of
1.6 × 10-19 coulomb, and each electron carries an equal negative charge. Neutrons do not carry any net charge. Normally, a body has equal number of protons...
Control and coordination
Study Material and Notes of Ch 7 Control and Coordination Class 10th Science
Topics in the Chapter
• Introduction
• System for control and coordination in animals
• Nervous System
→ Receptors
• Neuron
→ Functioning of Neuron
→ Parts of Neuron
→ Synapse
• Reflex Action
→ Types of Responses
→ Need for Reflex Action
• Human Nervous System
• Human Brain
→ For-Brain
→ Mid-Brain
→ Hind-Brain
→ Protection of Brain and Spinal Cord
→ Coordination between Nervous and Muscular Tissue
→ Limitation of Electric communication/Nervous System
→ Chemical combination
•...
Sunday, 11 March 2018
Notes of life process
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Life Processes Class 10 Notes BiologyNCERT CBSE Chapter 6
➣ Life processes – The processes that are necessary for an organism to stay alive. Eg. Nutrition,respiration, etc.
➣ Criteria of life- (i) Growth (ii) Movement
➣ Nutrition- The process in which an organism takes in food, utilizes it to get energy, for growth, repair and maintenance, etc. and excretes the waste materials from the...
Friday, 9 March 2018
Management of Natural Resources, class 10th
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Management of Natural Resources for Class 10th
Science Class 10 Notes for Management of Natural Resources
1. Anything in the environment which can be used is called a natural resource.
Controlling system for the use of natural resources in such a way as to avoid their wastage and to use them in the most effective way is called management of natural resources.
Ganga Action Plan (GAP) was formulated...
Environment, class 10th
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Environment for Class 10th
Science Class 10 Notes for Our Environment
Introduction
The environment includes our physical surroundings like air (or atmosphere), water bodies, soil (land) and all the organisms such as plants, animals, human beings and micro organisms like bacteria and fungi (called decomposers).
The waste materials produced by the various activities of man and animals are poisonous to...
