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<p>KENDRIYA VIDYALAYA,KHAMMAM</p> <p>SCIENCE STREAM</p> <p>Summer Holidays Homework 2016 :-+2 class:-</p> <p> (2016-17) - XII</p> <p>- </p> <p>1) - -1) - |2) | |</p> <p> - 1) -1) , 2) -1) , 2) </p> <p>1. - | </p> <p>Biology:-</p> <p>1. Can you list the changes seen in human beings that are indicative of reproductive maturity?</p> <p>2. Find out the names of 5 more flowers that are used in social and cultural celebrations in your family? Have you heard of floriculture what does it refer to?</p> <p>3. Both wind and water pollinated flowers are not very colorful and dont produce nectar , what would be the reason for this?</p> <p>4. Draw the diagram of longitudinal section of flower and egg apparatus showing entry of pollen tube into synergids?</p> <p>5. Draw the diagram of fertilized embryo sac and male and female reproductive system in humanbeing?</p> <p>Chemistry:-</p> <p>1. Derive expressions for raoults law for ideal gas &amp; non-ideal gas equations.</p> <p>2. define colligative properties .and derive expressions for </p> <p> A) relative lowering of vapour pressure</p> <p> B) Depression in freezing point</p> <p> c) Elevation in boiling point</p> <p>3. Draw 14 types of Bravice lattice structures.</p> <p>4. Define Primitive and non- primitive cells. Draw the structures for Primitive cells.</p> <p>5. Write the solutions for NCERT textual questions in SOLUTIONS</p> <p>Physics:-</p> <p>1. state and explain coulombs law in electro statics?</p> <p>2. Derive the expression for electric field intensity due to electric dipole at a point on axial line?</p> <p>3. Derive the expression for electric field intensity due to electric dipole at a point on equatorial line?</p> <p>4. Derive the expression for torque acting on a electric dipole placed in uniform electric field?</p> <p>5. what are electric lines of force &amp; give their properties</p> <p>MATHS</p> <p>1) SLet f:NN be a function defined as f(x) = 4x2 + 12x + 15.Show that f: NS is invertible(where S is range of f).Find the inverse of f and hence find fS is invertible(where S is range of f).Find the inverse of f and hence find f-1(31) and f-1(87).</p> <p>2) Consider f:R+[-5,) given by f(x) = 9x2 + 6x 5, Show that f is invertible with f-1(y) = </p> <p>3) Show that f:[-1,1] R given by is one one.Find the inverse of the function</p> <p> f :[-1,1]Range f.</p> <p>4) Let A = R {3} and B = R {1}.Consider the function f:AB defined by f(x) = .Is f one one and onto? Justify your answer.</p> <p>5) Let f:NN defined by for all nN.State whether the function f is bijective.Justify your answer.</p> <p>6) Let A = R {3} and B = R {2/3}.If f:A B given by f(x) = ,prove that f is a bijective function.</p> <p>7) Show that f:AA ,A = R {2/3} defined as f(x) = is one- one and onto.Hence find f-1.</p> <p>8) Define a binary operation * on the set [0,1,2,3,4,5}as a*b = </p> <p>Show that zero is the identity for this operation and each element a0 of the set is invertible </p> <p>with 6 a being the inverse of a.</p> <p>9) Prove that the relation R in the set A = {5,6,7,8,9} given by R = {(a,,b): |a - b|is divisible by 2}is an equivalence relation.Find all elements related to element 6.</p> <p>10) Prove that the relation R in the set A = {xZ : 0 x 12} given by R = {(a,,b): |a - b|is a multiple of 4}is an equivalence relation.</p> <p>11) let A = NxN and * be a binary operation on A defined by (a.b)*(c,d) = (a + c,b + d).Show that * is commutative and associative.Also find the identity element for * on A,if any.</p> <p>COMPUTER SCIENCE</p> <p>Find the output of the following program:</p> <p>#include</p> <p>struct MyBox</p> <p>{</p> <p>int Length, Breadth, Height;</p> <p>};</p> <p>void Dimension (MyBox M)</p> <p>{</p> <p>cout</p>