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What happened to the centre state relations when different parties ruled at the centre and state levels till 1990? -civics-class 10-cbse1 AnswerFor the stability of a floating body the 3 AnswerConstruct tangents to each circle from the centre of the other circle. Mathematics CBSE class 10 20151 AnswerHow do state or regional political parties contribute in strengthening federalism and democracy of India? Explain with examples.-cbse-civics-class10-20121 AnswerA hoop of radius r and mass m rotating with an angular velocity ω0 is placed on a rough horizontal surface. The initial velocity of the centre of the hoop is zero. What will be the velocity of the centre of the hoop when it ceases to slip ? - physics 20131 AnswerIn the Fig PQ is a tangent at a point C to a circle with centre O. if AB is a diameter and ∠CAB = 30°, find ∠PCA. Mathematics CBSE class 10 20161 AnswerWhy, despite the implementation of green revolution, 65 per cent of our population continued to be engaged in the agriculture sector till 1990? -Economics CBSE class 11 ncert1 AnswerIn the given figure, O is centre of the circle with AC = 24 cm, AB = 7 cm and ∠BOD = 90°. Find the area of the shaded region. Mathematics CBSE class 10 20171 AnswerWhat are trophic levels? Give an example of a food chain and state the different trophic levels in it.-CBSE Physics 1 AnswerWhat do you mean by secular state ? Give any two provisions that make India a secular state ? -civics-class 10-cbse1 AnswerIn a circle of radius 21 cm, an arc subtends an angle of 60 degree at the centre. Find: Mathematics CBSE class 10 20132 AnswerIn the given figure, two concentric circles with centre O have radii 21 cm and 42 cm. If ∠AOB = 60°, find the area of the shaded region.Mathematics CBSE class 10 20171 Answer What is the direction of magnetic field at the centre of a current carrying circular loop ? -2007 CBSE Physic class 101 AnswerExplain the menstrual phase in a human female. State the levels of ovarian and pituitary hormones during this phase. cbse-Biology-class-121 AnswerIn an aircraft, elevator control effectiveness determines GATE-Aerospace Engineering-Question-20121 AnswerIn the given figure, XY and X’Y’ are two parallel tangents to a circle with centre O and another tangents AB with point of contact C, is intersecting XY at A and X’Y’ at B. Prove that ∠AOB = 90°. Mathematics CBSE class 10 20171 AnswerAn aircraft in trimmed condition has zero pitching moment at GATE-Aerospace Engineering-Question-20121 AnswerIn Fig., a quadrilateral ABCD is drawn to circumscribe a circle, with centre O, in such a way that the sides AB, BC, CD and DA touch the circle at the points P, Q, R and S respectively. Prove that AB + CD = BC + DA. Mathematics CBSE class 10 20161 AnswerIf the angle between two tangents drawn from an external point P to a circle of radius a and centre O, is 60°, then find the length of OP. Mathematics CBSE class 10 20151 Answer Draw a ray diagram to show the formation of image of an object placed between infinity and the optical centre of a concave lens. -2008 CBSE Physic class 101 Answer