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ICSE SEMESTER 2 EXAMINATION, SPECIMEN QUESTION PAPER, MATHEMATICS, Maximum Marks: 40, Time allowed: One and a half hours, Answers to this Paper must be written on the paper provided separately., You will not be allowed to write during the first 10 minutes., This time is to be spent in reading the question paper., The time given at the head of this Paper is the time allowed for writing the answers., Attempt all questions from Section A and any three questions from Section B., The intended marks for questions or parts of questions are given in brackets [ ]., , SECTION A, (Attempt all questions from this Section.), Question 1, Choose the correct answers to the questions from the given options. (Do not copy the, question, Write the correct answer only.), (i), , (ii), , [10], , The point (3,0) is invariant under reflection in:, (a), , The origin, , (b), , x-axis, , (c), , y-axis, , (d), , both x and y axes, , In the given figure, AB is a diameter of the circle with centre ‘O’. If ∠𝑪𝑪𝑪𝑪𝑪𝑪 = 55⁰, then the value of x is:, , T22 511 S2 – SPECIMEN, , 1 of 7

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(a), , 27.5⁰, , (b), , 55⁰, , (c), , 110⁰, , (d), , 125⁰, , (iii) If a rectangular sheet having dimensions 22 cm x 11 cm is rolled along its shorter, side to form a cylinder. Then the curved surface area of the cylinder so formed is:, (a), , 968 cm2, , (b), , 424 cm2, , (c), , 121 cm2, , (d), , 242 cm2, , (iv) If the vertices of a triangle are (1,3), (2, - 4) and (-3, 1). Then the co-ordinate of its, centroid is:, , (v), , (a), , (0, 0), , (b), , (0, 1), , (c), , (1, 0), , (d), , (1, 1), , tan 𝜽𝜽 x �𝟏𝟏 − 𝒔𝒔𝒔𝒔𝒔𝒔²𝜽𝜽 is equal to:, (a), , (b), (c), (d), (vi), , cos 𝜽𝜽, sin 𝜽𝜽, , tan 𝜽𝜽, cot 𝜽𝜽, , The median class for the given distribution is:, Class Interval, Cumulative Frequency, (a), , 1–5, , (b), , 6 – 10, , (c), , 11 – 15, , (d), , 11 – 20, , T22 511 S2 – SPECIMEN, , 1–5, , 6 – 10, , 11–15, , 16 –20, , 2, , 6, , 11, , 18, , 2 of 7

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(vii) If the lines 7𝑦𝑦 = 𝑎𝑎𝑎𝑎 + 4 𝑎𝑎𝑎𝑎𝑎𝑎 2𝑦𝑦 = 3 − 𝑥𝑥, are parallel to each other, then the value of, ‘a’ is:, (a), , -1, , (b), , −𝟕𝟕, , (c), , −𝟐𝟐, , (d), , 14, , 𝟐𝟐, 𝟕𝟕, , (viii) Volume of a cylinder is 330 cm3. The volume of the cone having same radius and, height as that of the given cylinder is:, (a), , 330 cm3, , (b), , 165 cm3, , (c), , 110 cm3, , (d), , 220 cm3, , (ix) In the given graph, the modal class is the class with frequency:, , (x), , (a), , 72, , (b), , 21, , (c), , 48, , (d), , 36, , If the probability of a player winning a game is 0.56. The probability of his losing, this game is:, (a), , 0.56, , (b), , 1, , (c), , 0.44, , (d), , 0, , T22 511 S2 – SPECIMEN, , 3 of 7

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SECTION B, (Attempt any three questions from this Section.), , Question 2, (i), , Find the ratio in which the x-axis divides internally the line joining points A (6, -4), and B ( -3, 8)., , (ii), , [2], , Three rotten apples are accidently mixed with twelve good ones. One apple is picked, at random. What is the probability that it is a good one?, , [2], , (iii) In the given figure , AC is a tangent to circle at point B. ∆𝑬𝑬𝑬𝑬𝑬𝑬 is an equilateral, triangle and ∠𝑪𝑪𝑪𝑪𝑪𝑪 = 𝟒𝟒𝟒𝟒°. Find:, , (a), , (b), (c), , [3], , ∠𝑩𝑩𝑩𝑩𝑩𝑩, , ∠𝑭𝑭𝑭𝑭𝑭𝑭, ∠𝑨𝑨𝑨𝑨𝑨𝑨, , (iv) A drone camera is used to shoot an object P from two different positions R and S, along the same vertical line QRS. The angle of depression of the object P from these, two positions are 35° and 𝟔𝟔𝟔𝟔° respectively as shown in the diagram. If the distance, , of the object P from point Q is 50 metres, then find the distance between R and S, correct to the nearest meter., , T22 511 S2 – SPECIMEN, , [3], , 4 of 7

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Question 3, (i), , In the given figure, PT is a tangent to the circle at T, chord BA is produced to meet, the tangent at P. Perpendicular BC bisects the chord TA at C. If PA = 9cm and, TB = 7cm, find the lengths of:, , (ii), , (a), , AB, , (b), , PT, , [2], , How many solid right circular cylinders of radius 2 cm and height 3 cm can be made, by melting a solid right circular cylinder of diameter 12 cm and height 15 cm?, , [2], , (iii) Prove that:, , [3], , 𝒔𝒔𝒔𝒔𝒔𝒔 𝑨𝑨, 𝒄𝒄𝒄𝒄𝒄𝒄𝟐𝟐 𝑨𝑨, +, = 𝒔𝒔𝒔𝒔𝒔𝒔 𝑨𝑨 + 𝒄𝒄𝒄𝒄𝒄𝒄 𝑨𝑨, 𝒄𝒄𝒄𝒄𝒄𝒄 𝑨𝑨 − 𝒔𝒔𝒔𝒔𝒔𝒔 𝑨𝑨 𝟏𝟏 − 𝒄𝒄𝒄𝒄𝒄𝒄 𝑨𝑨, , (iv) Use graph paper for this question, take 2 cm = 10 marks along one axis and, 2 cm = 10 students along the other axis., The following table shows the distribution of marks in a 50 marks test in, Mathematics:, Marks, No. of Students, , 𝟎𝟎 − 𝟏𝟏𝟏𝟏, 6, , 𝟏𝟏𝟏𝟏 − 𝟐𝟐𝟐𝟐, 10, , 𝟐𝟐𝟐𝟐 − 𝟑𝟑𝟑𝟑, , 𝟑𝟑𝟑𝟑 − 𝟒𝟒𝟒𝟒, , 13, , 7, , 𝟒𝟒𝟒𝟒 − 𝟓𝟓𝟓𝟓, 4, , Draw the ogive for the above distribution and hence estimate the median marks., , [3], , Question 4, (i), , (ii), , Find the equation of the perpendicular dropped from the point P (-1,2) onto the line, joining A (1,4) and B (2,3)., , [2], , Find the mean for the following distribution:, , [2], , Class Interval, , 20 – 40, , 40 – 60, , 60–80, , 80 –100, , Frequency, , 4, , 7, , 6, , 3, , T22 511 S2 – SPECIMEN, , 5 of 7

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(iii) A solid piece of wooden cone is of radius OP = 7 cm and height OQ = 12 cm. A, cylinder whose radius and height equal to half of that of the cone is drilled out from, this piece of wooden cone. Find the volume of the remaining piece of wood., (Use, 𝜋𝜋 =, , 𝟐𝟐𝟐𝟐, 𝟕𝟕, , ), , [3], , (iv) Use a graph sheet for this question, take 2cm = 1 unit along both x and y axis:, (a), , [3], , Plot the points A (3,2) and B (5,0). Reflect point A on the y-axis to A΄. Write, co-ordinates of A΄., , (b), , Reflect point B on the line AA΄ to B΄. Write the co-ordinates of B΄., , (c), , Name the closed figure A’B’AB., , Question 5, (i), , (ii), , In the given figure, the sides of the quadrilateral PQRS touches the circle at A,B,C, and D. If RC = 4 cm, RQ = 7 cm and PD = 5cm. Find the length of PQ:, , [2], , Prove that:, , [2], , 𝒔𝒔𝒔𝒔𝒔𝒔𝟑𝟑 𝜽𝜽 + 𝒄𝒄𝒄𝒄𝒄𝒄𝟑𝟑 𝜽𝜽, = 𝟏𝟏 − 𝒔𝒔𝒔𝒔𝒔𝒔 𝜽𝜽 𝒄𝒄𝒄𝒄𝒄𝒄 𝜽𝜽, 𝒔𝒔𝒔𝒔𝒔𝒔 𝜽𝜽 + 𝒄𝒄𝒄𝒄𝒄𝒄 𝜽𝜽, , T22 511 S2 – SPECIMEN, , 6 of 7

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(iii) In the given diagram, OA = OB, ∠𝑂𝑂𝑂𝑂𝑂𝑂 = 𝜃𝜃 𝑎𝑎𝑎𝑎𝑎𝑎 the line AB passes through point, P (-3, 4)., , [3], , Find:, (a), , Slope and inclination (𝜃𝜃) of the line AB, , (b), , Equation of the line AB, , (iv) Use graph paper for this question. Estimate the mode of the given distribution by, plotting a histogram. [Take 2 cm = 10 marks along one axis and 2 cm = 5 students, along the other axis], Daily wages(in ₹), No. of Workers, , [3], 𝟑𝟑𝟑𝟑 − 𝟒𝟒𝟒𝟒 𝟒𝟒𝟒𝟒 − 𝟓𝟓𝟓𝟓, 6, , 12, , 𝟓𝟓𝟓𝟓 − 𝟔𝟔𝟔𝟔, 20, , 𝟔𝟔𝟔𝟔 − 𝟕𝟕𝟕𝟕, 15, , 𝟕𝟕𝟕𝟕 − 𝟖𝟖𝟖𝟖, 9, , Question 6, (i), , A box contains tokens numbered 5 to 16. A token is drawn at random. Find the, probability that the token drawn bears a number divisible by:, , (ii), , (a), , 5, , (b), , Neither by 2 nor by 3, , [2], , Point M (2, b) is the mid-point of the line segment joining points P (a, 7) and, Q (6, 5). Find the values of ‘a’ and ‘b’., , [2], , (iii) An aeroplane is flying horizontally along a straight line at a height of 3000 m from, the ground at a speed of 160 m/s. Find the time it would take for the angle of elevation, of the plane as seen from a particular point on the ground to change from 60⁰ to 45⁰., Give your answer correct to the nearest second., , [3], , (iv) Given that the mean of the following frequency distribution is 30, find the missing, frequency ‘f’, Class Interval, Frequency, T22 511 S2 – SPECIMEN, , [3], 0 – 10 10 – 20 20–30 30 –40 40 – 50 50 – 60, 4, , 6, , 10, , f, , 6, , 4, 7 of 7