In a huge park, people are concentrated at three points (see figure):
A: where there are different slides and swings for children.
B: near which a man-made lake is situated.
C: which is near to a large parking and exit. Where should an ice cream parlour be set up so that maximum number of persons can approach it?

In a huge park, people are concentrated at three points (see Fig. 7.52):A : where there are different slides and swings for children,B : near which a man-made lake is situated,C : which is near to a large parking and exit. Where should an ice cream parlour be set up so that maximum number of persons can approach it?(Hint : The parlour should be equidistant from A, B and C).

In a park,people are concentrated at three points A,B,C, where A is where there are different slides and swings for children.B is near which a man made lake is situated.C is which is near to a parking and exist.An ice cream parlour equiding and exist.An ice C.then find ice cream parlour located.Justify.

State which of the following statements are true (T) and which false (F): Point has a size because we can see it as a thick dot on paper. By lines in geometry, we mean only straight lines. Two lines in a place always intersect in a point. Any plane through a vertical line is vertical. Any plane through a horizontal line is horizontal. There cannot be a horizontal line is a vertical plane. All lines in a horizontal plane are horizontal. Two lines in a plane always intersect in a point. If two lines intersect at a point P , then P is called the point of concurrence of the two lines. If two lines intersect at a point p , then p is called the point of intersection of the two lines. If A , B , C a n d D are collinear points D , P a n d Q are collinear, then points A , B , C , D , P a n d Q and always collinear. Two different lines can be drawn passing through two given points. Through a given point only one line can be drawn. Four points are collinear if any three of them lie on the same line. The maximum number of points of intersection of three lines in three. The minimum matching of the statements of column A and Column B .

In a children's park a heavy rod is pivoted at the centre and is made to rotate about the pivot so tht the rod always remains horizontal. Two kids hold the rod near the ends and thus rotate with the rod figure. Let the mas of each kid be 15 kg, the distance betweent eh points of the rod where the two kids hold it be 3.0 m and supose that teh rod rotates at the rate of 20 revolutions per minute. Find the force of fircton exerted by te rod on one of the kids.

A point sources S emitting light of wavelength 600nm is placed at a very small height h above the flat reflecting surface AB (see figure).The intensity of the reflected light is 36% of the intensity.interference firnges are observed on a screen placed parallel to the reflecting surface a very large distance D from it. (A)What is the shape of the interference fringes on the screen? (B)Calculate the ratio of the minimum to the maximum to the maximum intensities in the interference fringes fromed near the point P (shown in the figure) (c) if the intenstities at point P corresponds to a maximum,calculate the minimum distance through which the reflecting surface AB should be shifted so that the intensity at P again becomes maximum.

A vertical wind screen of a car is made up of two parts, as shown in figure, where the upper one A is 25cm vertically long and covers the 5cm of the lower piece B.The upper one is hinged at the top so that it can be opened outward, inclining to the vertical. The car is running on the horizontal road at 60km/hr in the rain which is falling vertically at 20km/hr. Find the maximum angle, through which the upper part A can be opened outward, such that the rain drops do not enter the car.