Plimsoll lines are marked on the hull of a ship for decorative purposes.

In each of the figures [4.222 (i)-(iv)] given below, a line segment is drawn parallel to one side of the triangle and the lengths of certain line-segments are marked. Find the value of x in each of the following: (FIGURE)

Match the properties and uses of alloys in List 1 with the appropriate answer from List 2. List 1. The alloy contains Cu and Zn, is List hard and is used in decorative articles 2. It is stronger than Aluminium, light and is used in making light tools. 3. It is lustrous, hard corrosion resistant and used in surgical instruments. 4. Tin lowers the melting point of the alloy and is used for soldering purpose 5. The alloy is hard, brittle takes up polish and is used for making statues. List 2 : A. Duralumin B Brass C. Bronze D. Stainless Steel E. Solder

Statement-I: Blocks of magnesium are ofter strapped to steel hulls of ocean going ships. Because Statement-II: Magnesium causes cathode protection of iron.

Some points on a plane are marked and they are connected pair wise by line segments . IF the total number of line segments formed is 10 then the number of marked points on the plane is

There is a staircase as shown in Figure, connecting points A and B . Measurements of steps are marked in the figure. Find the straight line distance between A and B .

Blocks of magnesium metal are often strapped to the steel hulls of ocean going ships in order to:

A hydrogen atom having kinetic energy E collides with a stationary hydrogen atom. Assume all motions are taking place along the line of motion of the moving hydrogen atom. For this situation, mark out the correct statement (s).

To divide a line segment AB in the ratio 5:7, first a ray AX is drawn, so that /_BAX is an acute angle and then at equal distances point are marked on the ray AX such that the minimum number of these points is

Mary wants to decorate her Christmas tree. She wants to place the free on a wooden block covered with coloured paper with picture of Santa Claus on it. She must know the exact quantity of paper to buy for this purpose. If the box has length, breadth and height as 80 cm, 40 cm, and 20 cm respectively. How many square sheets of paper of side 40 cm would she require?

Two ships are there in the sea on either side of a light house in such a way that the ships and the light house are in the same straight line. The angles of depression of two ships are observed from the top of the light house are 60^@ and 45^@ respectively. If the height of the light house is 200 m, find the distance between the two ships. (U s e\ \ sqrt(3)=1. 73)