straight-line method

Consider a thin long charged wire. Let the charge per unit length of the wire be l . To calculate the field at P we consider a Gaussian surface with wire as axis, radius r and length l as shown in the figure. This Gaussian surface that is, the cylinder is closed at each end by planes normal to the ..

What type of transformation is there in the following figure, where L and L′ represent straight lines? => Reflection or Symmetry or Translation or Rotation..

Find the number of straight lines formed by 9 points of a plane in which no 3 points are collinear. => 2 9 or 9 2 or 9 P 2 or 9 C 2..

Hence, the given equation represents n straight lines. All these straight lines pass through the origi..

Select the correct stement/statements. 1. The ends of a line are points. 2. A straight line is a line which lies evenly with the points on itself. 3. A plane surface is a surface which lies evenly with the straight lines on itself. => 1, 2..

Graphical Method of Order Determination - First, the data of concentrations versus time is obtained by a suitable method. Then, the data is plotted as concentration versus time. From the resulting plot, the instantaneous rates are determined by drawing tangents to curve and then..

Wendy wishes to divide a sheet of paper into as many regions as possible using straight lines. Suppose she draws 10 lines. What is the largest number of regions that can be obtained? => 56 or 45 or 100 or None of the above..

Let the object O be viewed with our eyes which is at a distance of r, making an angle q between the two eyes as shown in the diagram. The angle q , caused by the two lines drawn from the position of the two eyes to the object, is called angle of parallax. If we can consider OA a..

On a given tennis court, the distance between the base line and the net is 10 m and the distance between the service line and the net is 5 m. The net is 0.9 m high. A player serves the ball directly above the base line. (Assume the ball travels in a straight ..

The straight path joining two points A and B is called a line segment ..