Two poles of heights 6 m and 11 m stand on a plane ground. If the distance between the feet of the poles is 12 m, find the distance between their tops.

Saili plants 4 saplings, in a row, in her garden. The distance between two adjacent saplings is 3/4 m . Find the distance between the first and the last sapling.

in a Youing's double slit experiment,bicromatic light of wavelengths 400 nm and 560 nm are used.The distance between the slits is 0.1 mm and the distance between the plane of the slits and screen is 1.0m. the minimum distance between two successive regions of complete darkness is

The distance between Radha's home and her school is 3250 m.Express this distance into km.

Choose the correct option: David is observing his image in a plane mirror. The distance between the mirror and his image is 4m. If he moves 1m towards the mirror, then the distance between David and his image will be: