Numericals on Force and Laws of Motion for Class 9 Here you will find numericals on force and laws of motion for class 9. Problem 1: Find the force acting on a rocket and its acceleration if its velocity is 600 m s–1 at t = 60 s and 1000 ms–1 at t = 80s, … Read more
[PDF] Download Physics Numerical for Class 9 Here you will find Physics Numericals for Class 9. Each and every topic numericals covered in this article. Class 9 Physics Numericals Ch 8 Problems Based on Average Speed → Ch 8 Problems Based on Graphical Representation of Motion → Ch 8 Problems Based on Equations of Motion … Read more
Extra Questions for Class 9 Science Chapter 12 Sound Very Short Answer Type Show Answer 1. Sound is a form of energy or the medium by which we can communicate with each other. 2. The to and fro motion of an object is called vibration. 3. Voice box or larynx 4. No, the frequency of … Read more
In physics, work done is defined as the product of force applied to an object and its displacement. Work is a scalar quantity and is typically measured in the unit of Joules (J). The formula for calculating work is: W = F x d where W is the work done, F is the force applied, … Read more
Numericals for Class 9 Science Chapter 12 Sound Q.1. A boy hears an echo of his own voice from a distant hill after 1 s. the speed of sound is 340m/s. What is the distance of the hill from the boy? Q.2. An engine is approaching a hill at constant speed. When it is at … Read more
Q.1. An object weighs 10N when measured on the surface of the earth. What would be its weight when measured on the surface of the Moon? Q.2. Mass of an object is 10kg. What is its weight on Earth? Q.3. What is the mass of an object whose weight is 49N? Q.4. A body has … Read more
Q.1. If the distance between two masses is increased by a factor of 4, by what factor would the mass of one of them have to be altered to maintain the same gravitational force? Q.2. The gravitational force between two objects is F. How will this force change when (i) distance between them is reduced … Read more
NEWTON’S LAWS OF MOTION NEWTON’S SECOND LAW OF MOTION Newton’s second Law of Motion states that The rate of change of momentum is directly proportional to the force applied in the direction of force. For example; when acceleration is applied on a moving vehicle, the momentum of the vehicle increases and the increase is in … Read more
[PDF] Download Problems Based on Equations of Motion for Class 9 Science EQUATIONS OF MOTION When an object moves along a straight line with uniform acceleration, it is possible to relate its velocity, acceleration during motion and the distance covered by it in a certain time interval by a set of equations known as the … Read more
Graphical Representation of Motion A graph represents the relation between two variable quantities in pictorial form. It is plotted between two variable quantities. The quantity that is varied our choice is called independent variable. The other quantity, which varies as a result of this change, is called dependent variable. For example, in distance-time graph, time … Read more
Here we have provided questions based on average speed for class 9 science. Students can solve these problems for better practice. These questions on average speed are prepared by subject expert and is very useful for class 9 studying students.
Extra Questions for Class 9 Science Chapter 13 Why Do We Fall Ill Here we are providing extra questions for class 9 science chapter 13 Why Do We Fall Ill. Various type of questions are provided. These includes very short answer type questions, short answer type questions and long answer type questions as well. These … Read more
Extra Questions for Class 9 Science Chapter 11 Work and Energy Here we are providing extra questions for class 9 science chapter 11 work and energy. Various type of questions are provided. These includes very short answer type questions, short answer type questions and long answer type questions as well. These questions are important for … Read more
Board CBSE Useful for Class 9 Students Subject Science Chapter Gravitation Topic Thrust and Pressure Type of Questions Numerical Problems Answers Provided Yes Format Question-Answer Format Important Link Class 9 Science Numerical Problems Numericals Based on Class 9 Science Thrust and Pressure Here we are providing numericals based on class 9 science thrust and pressure. … Read more
Extra Questions for Class 9 Science Chapter 10 Gravitation Here we are providing extra questions for class 9 science chapter 10 gravitation. Various type of questions are provided. These includes very short answer type questions, short answer type questions and long answer type questions as well. These questions are important for exam as well. You … Read more
Extra Questions for Class 9 Science Chapter 4 Structure of Atom Here we are providing extra questions for class 9 science chapter 4 structure of atom. These questions are important for exam as well. You will be able to score more in your exams by practicing these questions. Very Short Answer Type Question (VSA) Q.1. … Read more
Extra Questions For Class 9 Science Chapter 9 Force and Laws of Motion Very Short Answer Type Questions (One Mark Each) Q.1. Give the net force acting on a body at rest. Answer Ans. Net force acting on a body at rest is zero. Q.2. State the meaning of balanced force. Answer Ans. Forces are … Read more
Extra Questions For Class 9 Science Chapter 7 Diversity in living organisms Very Short Answer Type Questions (One Mark Each) Q.1. What is classification of organisms? Answer Ans. Arrangement of organisms into groups or sets on the basis of similarities and differences is termed classification. Q.2. Which organisation state set rule for nomenclature of organism? … Read more
Extra Questions For Class 9 Science Chapter 5 Fundamental Unit of Life Very Short Answer Type Questions (One Mark Each) Q.1. What is Avogadro’s constant ? Answer Ans. Avogadro’s constant is the number of particles (atoms, ions or molecules) present in mole of the substance. Its value is 6.022 x 1023. Q.2. The atomic number … Read more
Extra Questions For Class 9 Science Chapter 5 Fundamental Unit of Life Very Short Answer Type Questions (One Mark Each) Q.1. Name the scientist who discovered cell. Answer Ans. Robert Hooke discovered cell in 1665. Q.2. Who discovered nucleus ? Answer Ans. Robert Brown discovered nucleus. Q.3. Who coined the term protoplasm ? Answer Ans. … Read more
Extra Questions For Class 9 Science Chapter 2 Is Matter Around Us Pure Very Short Answer Type Questions (One Mark Each) Q.1. Suggest separation techniques one would need to employ to separate the mixtures :(a) Mercury and water(b) Potassium Chloride and ammonium chloride. Answer Ans. (a) Using separating funnel. (b) Using sublimation. Q.2 Salt can … Read more
Extra Questions For Class 9 Science Chapter 1 Matter in Our Surroundings Very Short Answer Type Questions (One Mark Each) Q.1. Degree Celsius and Kelvin are two units of measuring temperature. Which of these are SI and non-SI units ? Answer Ans. Degree Celsius – Non-SI. Kelvin – SI. Q.2. What is the SI unit … Read more
