Cbse Board Previous Year Question Papers For Physics Cbse Board Previous Year Question Papers For Physics Question – 1. (a)Give two differences between distance and displacement. (b) What do you understand the term acceleration due to gravity ? Write its value in C.G.S. and S.I. units. (c) A car, initially at rest, picks up a velocity of 72 kmhr-1, over a distance of 25 m. Calculate (i) acceleration of car (ii) time in which it picks up above velocity. (d) State Newton’s third law of motion and give two examples. (e) Why is automobile tyres provided with rough surface ? Explain. (f) A force of 1600 dynes acts on a rigid body, such that the perpendicular distance between force and turning point is 40 cm. Calculate the moment of force. Know More About :- Andhra Pradesh Board Math Text Books
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(g) Is it possible to have a body, whose centre of gravity is outside the body ? If so, then give an example. (h) State Pascal’s law of transmission of pressure in a liquid. (i) Why does a ship made of iron not sink in water, while an iron nail sinks in it ? (j) Convert – 40ºC into Fahrenheit Scale. [Ans. – 40º F ] (k) Why does a thick glass tumbler crack when boiling water is poured in it ? Question – 2. (a) Prove that S = ut + 1/2at2, where u = initial velocity, v = final velocity, t = time taken to change the velocity, S = distance covered in time t and a = acceleration. (b) What do you understand by the term inertia ? Give two examples of inertia. (c) State the position of C.G. in case of the following regular bodies : (i) A triangle (ii) A rectangle (iii) A circle (iv) A square (v) A cylinder (vi) A sphere. Question – 3. (a) State three factors on which the pressure at a point in a liquid depends. (b) The blood pressure reading of a patient is recorded 160/100. Express the lower pressure in SI units. [Take density of mercury as 13.6×103 kgm-3 and g = 10 ms-2.] [ Read More About :- Science Books for Andhra Pradesh Board
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