Question
Which of the following spectrum range is called
photosynthetically active radiation?Solution
Photosynthetically active radiation (PAR) is light of wavelengths 400-700 nm and is the portion of the light spectrum utilised by plants for photosynthesis.
A and B together can complete a piece of work in 30 days while A alone can complete 50% of the work in 40 days. Find the time taken by B to compl...
If 20 men or 12 boys can complete a job in 25 days, how long will it take for a team of 15 men and 18 boys to complete the same job? (Calculate approxim...
A can count 100 eggs in 4 minutes while B can count the same number of eggs in 5 minutes. How much time will be required if they work together to count ...
- 'P', 'Q', and 'R' can complete a job in 60, 90, and 120 days respectively. They begin together, but 'P' leaves 10 days before the work is done and 'Q' leav...
Virat can do a piece of work in 28 days and Sachin can do the same work in 42 days. If Virat works for 4 days and got Rs. 1800, and the remaining work w...
36 men can complete 3/5 part of a work in 8 days working 9 hours a day. How many women can complete rest of the work if they work for 6 hours a day for ...
Anu can finish 25% of an assignment in 10 days, whereas Tanya can do 30% in 12 days. Anu works on it for 16 days and leaves. How long will Tanya take to...
30 men can complete a task in 160 days. 12 men start the work and manage to do half of it. Then, 18 more men are added to the team to help finish the wo...
Some Category of workers can complete a decided project in 20 days. However, due to some unpredicted situation, 5 workers were absent. That’s why, the...
Alok and Vinay can complete some work alone in 12 days and 20 days respectively. Both of them started the work together but Vinay left the work 4 days b...