Question
Which of the following is used to initiate nuclear
fission?Solution
Neutrons are used to initiate nuclear fission reactions. Nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts. The fission process often produces free neutrons and gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay. Hence, option B is correct.
4 girls together are as efficient as one man. If 32 girls can complete 40 garments in 5 days, how many men are needed to complete the same work in 2 days?
Anjali,' 'Bheem,' and 'Chetna' started a business together with initial investments of Rs. 3,875, Rs. (B + 2700), and Rs. 'B,' respectively. After 16 mo...
20 men can complete a piece of work in 40 days. ‘x’ men started the work and after 35 days 64 more men joined them so that whole work was finished i...
A man, a woman and a boy can do a work in 3, 2, 6 days respectively. How many children were required with 1 man and 1 woman to complete the same work in...
A completes 1/3 of a task in 4 days, while B finishes the remaining work in 8 days. If B is 25% less efficient than C, how many days will A, B, and C to...
P can complete a piece of work in 15 days. Q in 20 days and R in 30 days. P and R worked together for three days and then P was replaced by Q. In how ma...
'Sita' can complete some work alone in 20 days. 'Geeta' is twice as efficient as 'Reeta' and three times as efficient as 'Sita'. If 'Sita' and 'Reeta' s...
'B' can complete a task in 15 days, and when 'A' and 'B' collaborate, they can finish the same task in 8 days. 'A' initiated the work alone and worked f...
'A' and 'B' can do a piece of work together in 30 days. They worked together for 18 days, and then left the work. The remaining job was finished by 'C' ...
Arjun is 50% less efficient than the combined efficiency of Bheem and Cherry. If Bheem can complete a task in 12 days and Cherry in 20 days, determine t...