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Magnification (m) = -v / u -2 = -v / 15 v = 30 cm Since m is negative, the image is on the same side as the object, so the distance is -30 cm.
A sphere is melted and recast into 64 smaller spheres of equal size. If the radius of the original sphere is 16 cm, find the radius of each smaller sphere.
A street of width 25 metres surrounds from outside a rectangular garden whose measurement is 190 m × 220 m. The area of the path (in square metres...
The length of a plot is six times its breadth. A playground measuring 192 square metres occupies half of the total area of the plot. What is the length ...
The radii of two concentric circles are 20 cm and 25 cm. A straight line PQRS intersects the larger circle at the points P and S and intersects the smal...
The circumference of a circle is given as 220 m. What is the area of the circle? [Use π = 22/7]
A sphere of radius 21 cm is melted and reshaped into a cone with a circular base of the same radius as the sphere. What is the he...
A stone is thrown vertically with the velocity which would just carry it to height of 100 feet. Two seconds later another stone is projected vertically ...
The cost of fencing a rectangular field at the rate of Rs. 3/metre is Rs. 270. If the length of the field is 11 metres more than its breadth, then find ...
If the area of square is 225 cmsup2; and the breadth of rectangle is 20% more and the length is 30% more than the side of the square, then find the the ...
