Abc physics class 12 pdf

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Find 15th term of the AP with second term 11 and common difference 9. Find the length of the arc. Find the 31st term of an AP whose 11th term is 38 and the 16th term is 73. A point P is 18 cm from the centre of a circle. The radius of the circle is 12 cm. Find the length of the tangent drawn to the circle from the point P. In a box, there are 800 bulbs, out of which 20 bulbs are defective.

One bulb is taken out at random. Find the probability that the bulb is not defective. The radii of two circles are 8 cm and 6 cm respectively. Find the radius of the circle having area equal to the sum of the areas of these two circles. A rectangular solid metallic cuboid 18 cm x 15 cm x 4. 5 cm is melted and recast into solid cubes each of side 3 cm.

How many solid cubes can be made? Divide 39 into two parts such that their product is 324. Determine the AP whose third term is 16 and the 7th term exceeds the 5th term by 12. 3 times the corresponding sides of triangle ABC. 20, 21 and placed in a box. The cards are mixed thoroughly. A card is drawn at random from the box.

A box contains 80 discs which are numbered from 1 to 80. The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes. A fez, the cap used by the Turks, is shaped like the frustum of a cone. If its radius on the open side is 10 cm, radius at the upper base is 4 cm and its slant height is 14 cm, find the area of material used for making it. One year ago, a man was 8 times as old as his son.

Now, his age is equal to the square of his son’s age in years. A manufacturer of TV sets produced 600 units in the third year and 700 units in the 7th year. In figure, given below, XP and XQ are tangents from X to the circle with centre O and ARB is tangent at point R. An electric pole is 12 m high. A steel wire tied to the top of the pole is affixed at a point on the ground to keep the pole upright. Find the height of the tower and the original distance from the foot of the tower.

Find the area of the shaded region in figure if ABCD is a square of side 20 m and APD and BPC are semicircles. If shaded region is used by society for planting trees, then what value is reflected? A solid is in the form of a cone mounted on a right circular cylinder both having same radii of their bases. Base of the cone is placed on the top base of the cylinder. If the radius of the base and height of the cone be 4 cm and 7 cm respectively and the height of the cylindrical part of the solid is 3.