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A tangent galvanometer has a coil of 25 turns and radius of 15 cm. The horizontal component of the earth’s magnetic field is 3 ´ 10–5 T. The current required to produce a deflection of 45o in it, is
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When ampere current is passed in a tangent galvanometer, there is a deflection of 30° in it. The deflection obtained when 3 amperes current is passed, is
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Time period for a magnet is T. If it is divided in four equal parts along its axis and perpendicular to its axis as shown then time period for each part will be
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Physics-General
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At a certain place a magnet makes 30 oscillations per minute. At another place where the magnetic field is double, its time period will be
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At which place, earth's magnetism become horizontal
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At a certain place the horizontal component of the earth’s magnetic field is B0 and the angle of dip is 45o. The total intensity of the field at that place will be
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Physics-General
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At a certain place, the horizontal component and the vertical component of the earth's magnetic field are equal in magnitude. The total intensity at the place will be
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Lines which represent places of constant angle of dip are called
Lines which represent places of constant angle of dip are called
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At a place, the horizontal and vertical intensities of earth's magnetic field is 0.30 Gauss and 0.173 Gauss respectively. The angle of dip at this place is
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The angle of dip is the angle
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Maths-
If the normal at the points Pi (xi, yi), i = 1 to 4 on the hyperbola xy = c2 are concurrent at the point Q(h, k), then is equal to
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Maths-General
Maths-
The most general form of the equation of a conic is given by . Let x and y-axes be respectively tangent and normal to the conic given by equation ((a) at the origin. Then clearly c = 0. Also by putting y = 0, we get = 0. Both roots of the equation are zero. Therefore g = 0.
Hence the most general form of the equation of such a conic is given by.
Let foci of the conic represented by the equation, where and be and. Then the feet of perpendiculars from F1 and F2 upon x-axis lie on the curve
The most general form of the equation of a conic is given by . Let x and y-axes be respectively tangent and normal to the conic given by equation ((a) at the origin. Then clearly c = 0. Also by putting y = 0, we get = 0. Both roots of the equation are zero. Therefore g = 0.
Hence the most general form of the equation of such a conic is given by.
Let foci of the conic represented by the equation, where and be and. Then the feet of perpendiculars from F1 and F2 upon x-axis lie on the curve
Maths-General
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According to Huckel’s rule a compound is said to be aromatic if it contains
According to Huckel’s rule a compound is said to be aromatic if it contains
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structure is
structure is
Chemistry-General