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# ICSE Notes 2018 : Physics Must Know Questions

15 pages, 285 questions, 255 questions with responses, 436 total responses,    16    0
 Aayush Patel St. John's Universal School, Mumbai X Science & Maths
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MUST KNOW QUESTIONS FOR PHYSICS 2017-2018 Force Q1. Define moment of force and state its S.I. unit. Q2. State two factors affecting the turning effect of a force. Q3. Why is it easier to open a door by applying the force at the free end of it? Q4. State two conditions for a body, acted upon by several forces, to be in equilibrium. Q5. A uniform meter rule can be balanced at the 70 cm mark when a mass 0.05 kg is hung from the 94 cm mark. (i) Draw a diagram of the arrangement. (ii) Find the mass of the meter rule. Q6. Define the term centre of gravity of a body. Q7. At which point is the centre of gravity situated in: (i) a triangular lamina (ii) a circular lamina (iii) hollow cone (iv) solid or hollow sphere Q8. Differentiate between a uniform linear motion and uniform circular. Q9. Differentiate between centripetal and centrifugal force. Q10. State two conditions for a body to be in equilibrium. Work, Energy and Power Q1. State the condition when the work done by a force is (a) positive (b) negative. Explain with the help of examples. Q2. A satellite revolves around the earth in a circular orbit. What is the work done by the satellite? Give reason. Q3. What are the S.I. and C.G.S. units of work? How are they related? Explain. Q4. Define the term energy and state its S.I. unit. Q5. Define one kilowatt hour. How is it related to joule? Q6. Differentiate between energy and power. __________________________________________________________________________________ Std: X Physics Must Know Questions Page 1 of 15

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