Width of face of a person is 18cm.He is looking at his face if separation between the eyes is 8cm.What is the minimum width of mirror required see face :-

(1) 5cm

(2) 4cm

(3) 10cm

(4) 9cm

A person has D cm wide face and his two eyes are separated by d cm. The minimum width of a mirror required for the person to view his complete face is

An object is placed 20cm in front of a plane mirror. The mirror is moved 2cm towards the object. The distance between the positions of the original and final images seen in the mirror is (a) 2 cm (b) 4 cm (c) 10 cm (d) 22 cm

An object is placed 20cm in front of a plane mirror. The mirror is moved 2cm towards the object. The distance between the positions of the original and final images seen in the mirror is (a) 2 cm (b) 4 cm (c) 10 cm (d) 22 cm

The area of a rectangular piece of cardboard is 36 sq cm and its length is 9 cm. What is the width of the cardboard?

If four times the sum of the areas of two circular faces of a cylinder of height 8 cm is equal to twice the curve surface area, then diameter of the cylinder is (a) 4 cm (b) 8 cm (c) 2 cm (d) 6 cm

Find the area of a trapezium whose parallel sides are of lengths 10cm and 12cm and the distance between them is 4cm.

The volume of a cuboid is 756 cm ^(3) . Its length is 12 cm and width is 9 cm . Find the height of the cuboid.

Find the perimeter of the rectangle whose length is of 15 cm and width is of 8 cm

Final value of a if distance between the points (-9 cm, a cm) and (3 cm, 3cm) is 13 cm.

If the base radius and height of a right circular cone are 3cm and 4cm in lengths, then the slant height is (a) 5cm (b) 2cm (c) 25cm (d) 6cm