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Questions >> JEEMAIN and NEET >> JEEMAIN PAST PAPERS >> 2008

A parabola has the origin as its focus and the line x = 2 as the directrix. Then the vertex of the parabola is at

asked Nov 29, 2018 by pady_1

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A focus of an ellipse is at the origin. The directrix is the line x = 4 and the eccentricity is $\frac{1}{2}$ . Then the length of the semi-major axis is

asked Nov 29, 2018 by pady_1

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A die is thrown. Let A be the event that the number obtained is greater than 3. Let B be the event that the number obtained is less than 5. Then $P (A\cup B)$ is

asked Nov 29, 2018 by pady_1

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It is given that the events A and B are such that $P(A)=\frac{1}{4}P\bigg(\frac{A}{B}\bigg)=\frac{1}{2}$ $P\bigg(\frac{B}{A}\bigg)=\frac{2}{3}$ .Then P(B) is

asked Nov 29, 2018 by pady_1

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AB is a vertical pole with B at the ground level and A at the top. A man finds that the angle of elevation of the point A from a certain point C on the ground is $60^\circ$ . He moves away from the pole along the line BC to a point D such that CD = 7 m. From D the angle of elevation of the point A is $45^\circ$ . Then the height of the pole is

asked Nov 29, 2018 by pady_1

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