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WBJEE: Important Questions and Preparation Tips – Straight Lines

Dec 28, 2017 17:06 IST
    WBJEE 2018: Straight Lines
    WBJEE 2018: Straight Lines

    In this article, engineering aspirants will get complete chapter notes of chapter Straight Lines prepared by Subject Experts of Mathematics for WBJEE entrance examination 2018. Students always get 2-4 questions from this topic in the examination.

    These notes are based on the latest syllabus of WBJEE examination including important concepts, formulae and some previous year solved questions of the examination.

    These notes are prepared after the detailed analysis of few last year papers of the examination including all important topics related to Straight Lines like distance between two points, coordinates of the point divide any line segment, area of triangle, inclination of line, angle between two lines, equation of horizontal line, equation of vertical line, point-slope form of a line, two-point form of a line, slope-intercept form of a line, normal form of a line, distance of a point from a line, perpendicular distance between two lines etc.

    The concepts given in these notes are explained in a very detailed manner which will help aspirants in their preparation.

    WBJEE: Important Questions and Preparation Tips – Limits

    Important Concepts:

    WBJEE Straight Lines

    WBJEE: Important Questions and Preparation Tips – Integrals

    Some previous years solved questions are given below:

    Question 1:

    WBJEE Straight Lines Q1

    Solution 1:

    WBJEE Straight Lines S1

    WBJEE: Important Questions and Preparation Tips – Application of Derivatives

    Question 2:

    WBJEE Straight Lines Q2

    Solution 2:

    WBJEE Straight Lines S2

     Hence, the correct option is (a).

    WBJEE: Important Questions and Preparation Tips – Circles

    Question 3:

    WBJEE Straight Lines Q3

    Solution 3:

    WBJEE Straight Lines S3

    Hence, the correct option is (b).

    WBJEE: Important Questions and Preparation Tips – Area under Curve

     Question 4:

    WBJEE Straight Lines Q4

    (a) 1                                     

    (b) 2

    (c) 4                                     

    (d) 5

    Solution 4:

    Let the required point be (h, k)

    The distance from the straight line x – 2y + 1 = 0

    WBJEE Straight Lines S4

    Any one of equations (1) combined with any one of equations (2) will yield 4 points.

    Hence, the correct option is (c).

    WBJEE: Important Questions and Preparation Tips – Parabola

    Question 5:

    The straight lines x + y = 0, 5x + y = 4 and x + 5y = 4 form

    (a) an isosceles triangle

    (b) an equilateral triangle

    (c) a scalene triangle

    (d) a right angled triangle

    Solution 5:

    WBJEE Straight Lines S5

    Their points of intersection are (–1, 1) (1, –1) and (2/3, 2/3)

    Using distance formula the distance between AB and BC is same so, ABC is isosceles triangle.

    Hence, the correct option is (a).

    Physics all chapters complete notes for WBJEE 2018

    First attempt for JEE Main? Must read this article to crack the exam

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