Question
How much photoperiod (hours) is required by long day
plants?Solution
Long day plants flower only when the day length is longer than a certain critical period > 14 hours eg: include all the rabi season crops like wheat, barley. Sugarbeet, oats.
Trains 'M' and 'N' travel at speeds of 72 km/h and 90 km/h, respectively. It takes train 'M' 32 seconds to pass a certain platform, while train 'N' requ...
Two trains running in a opposite directions crosses pole in 84s and 57s respectively and they cross each other in 72s. Find the ratio of their speeds?
Train P travelling at 62 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 28 km/hr in 14 seconds...
- Length of Madhubani Express is (x + 40) m, and it can cross a platform of length (x – 40) m in 40 seconds with a speed of 24 m/s. Find the time taken by ...
Two trains of equal lengths take 20 seconds and 30 seconds respectively to cross a telegraph post. If the length of each train be 360 metres, in what ti...
A train 450 metre long takes 60 sec to cross a man running at a speed of 7 km/hr in the direction opposite to that of train. What is the speed of the tr...
A train 480 metre long takes 32 sec to cross a man running at a speed of 6 km/hr in the direction same to that of train. What is the speed of the train?
A train running at 25 km/hr takes 36 seconds to pass a platform. Next, it takes 14 seconds to pass a man walking at 7 km/hr in the same direction. Find ...
A train traveling at 54 km/h takes 25 seconds to pass a pole. Calculate the time it would take for the train to cross a platform, given that the ratio o...
Train X running at a speed of 30 km/hr crosses train Y in 15 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is...
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