Question
Train ‘A’ running with a speed of 90 km/h crosses a
pole in 7 seconds. If the time taken by train ‘A’ to cross train ‘B’ running with a speed of 54 km/h and coming from the opposite direction is 12 seconds, then find the length of train B.Solution
Speed of train A = 90 × 5/18 = 25 m/s Length of train A = 25 × 7 = 175 metres Let length of train B = ‘l’ metres Speed of train B = 54 × 5/18 = 15 m/s Relative speed if train A with respect to train B = 15 + 25 = 40 m/s So, I + 175 = 40 × 12 = 480 So, l = 305 metres
Which of the following is also “grand period” of rainfall in India?
What is the reason behind cell elongation in internodal regions of plants?
“King of Fruits” is called _________
Which alkaloid found in Periwinkle is used in cancer treatment?
Which of the following is the most-important constituent for jelly making?
Botanical name of African marigold is -
Yellow colour in papaya is due to
Edible part of carrot is
“King of Nuts” is called _________
Which of the following physiological process in plants involves the breaking down of complex organic molecules to release energy for cellular activities?
Relevant for Exams:
