Question
720 metres long train crosses a man who is moving in the
same direction with a certain speed, in 30 seconds. If the same train can cross a tree in 20 seconds with the same speed, then find the speed of the man.Solution
Speed of train = 720/20 = 36 m/sec Let the speed of the man be ‘s’ m/sec Relative speed of the train = (36 – s) m/sec According to the question, (36 – s) = 720/30 Or, s = 36 – 24 = 12 Therefore, speed of the man = 12 m/sec
Total number of agro - climatic zones of Tamil Nadu is
The estimate of degree of variation in a phenotypic trait in a population that is due to genetic variation between individuals in that population is ca...
What is the primary region for commercial oil palm cultivation?
. Which of the following fish is viviparous?
Which of the following statements accurately describes a key aspect of the light reaction in photosynthesis?
In apples, edible part of the fruit develops from which part of flower?
Choose the incorrect option
Which of the following is an example of a symbiotic bacterium commonly found in root nodules?
In choosing between the two completing resources, the saving in the resource replaced must be greater than the cost of resource added. Which of the foll...
Algae which is used in monitoring the water quality of estuaries is
Relevant for Exams:
