CBSE Class 9 Science Sound MCQs

Question. If the wave is propagating having the number of waves shown in the figure per second ,then the frequency of the wave is (a) 5Hz (b) 6Hz (c) 3Hz (d) 10Hz Answer : A Question. The characteristic of sound which enables us to distinguish one sound…

CBSE Class 9 Science Work and Energy MCQs

Question. Water stored in a dam posseses: (a) No energy (b) potential energy (c) kinetic energy (d) electrical energy Answer: B Question. When a body falls freely towards the earth then the total energy (a) remains constant (b) increase (c) decrease (d) first…

CBSE Class 9 Science Gravitation MCQs

Question: The mass of an object is (a) The amount of matter contained in the object, independent of where that object is found (b) the force of gravity on that object located at a particular point in space (c) dependent on whether the object is on the Earth or elsewhere. (d)…

CBSE Class 9 Science Force and Laws of Motion MCQs

Question: In the following example, try to identify the number of times the velocity of ball changes - A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and…

CBSE Class 9 Science Motion MCQs

Question: From the given v-t graph (figure) it can be inferred that the object is moving with (a) uniform velocity (b) non uniform velocity (c) At rest (d) moving with uniform acceleration Answer: A Question: What does the slope of distance - time graph…

CBSE Class 9 Science Physics Gravitation Notes

GRAVITATION NEWTON’S UNIVERSAL LAW OF GRAVITATION Every object in the Universe attracts every other object with a force which is (i) directly proportional to the product of their masses, and (ii) inversely proportional to the square of the distance between their centres.…

CBSE Class 9 Science Physics Force And Law Of Motion Notes

  FORCE AND LAWS OF MOTION Force and Laws of Motion Chapter Notes Key Learning: 1. Force is a push or pull acting upon an object. 2. Balanced forces: The resultant of all the forces acting on a body is zero. 3. Unbalanced forces: The resultant of all the forces…

CBSE Class 9 Mathematics Revision Question Paper Set 14

CBSE Class 9 Mathematics Question Paper SA2 2013. Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.      …

CBSE Class 9 Physics Work And Energy Worksheet

Question. A light and a heavy body have equal kinetic energy. Which one is moving fast? Ans : The lighter body is moving fast. Question. State the relation between kWh and joule. Define 1 watt. Ans : 1 kWh – 1000 Wh = 1000 Js–1 × 60 × 60 s      …

CBSE Class 9 Physics Sound Worksheet

INTRODUCTION - SOUND • Sound is a form of energy like heat energy, light energy, potential energy and kinetic energy. It causes a sensation of hearing in our ears. Th • The SI unit of sound is decibel (dB) representing sound pressure level (SPL). Decibel is a generic term…

CBSE Class 9 Physics Revision Worksheet

1- The school of a boy from his home is 1 km to the east. When he reaches back home, he says that he had traveled 2 km distance but his displacement is zero. Justify your answer. 2- Under what condition, the average speed is equal to the magnitude of the average velocity…

CBSE Class 9 Physics Motion Worksheet

Fill in the blanks : Question. when body covers equal distances in equal intervals of time then it is said to be having _____________________ Answer : Uniform Question. Displacement has both direction and magnitude for its complete description and these physical…

CBSE Class 9 Physics Gravitation Worksheet

Question. There are two kinds of balances i.e., a beam balance and a spring balance. If both the balances give the same measure of a given body on the surface of the earth, will they give the same measure on the surface of the moon? Explain. Answer. Beam balance…

CBSE Class 9 Physics Force And Laws Of Motion Worksheet

Question. What is Newton's First Law known as? The Law of A. Friction. B. Mass. C. Inertia. D. Gravity Answer: Inertia Question. Motions need an unbalanced net force to maintain A. True. B. False Answer: true Question. Which has more Inertia? (so need…

CBSE Class 9 Physics All Chapters Worksheet

  CBSE Class 9 Physics Worksheet - All Chapters Worksheets have become an integral part of the education system. Worksheets are very critical for every student to practice his/ her concepts. Students, teachers and parents can download all CBSE educational material and…