Question
It is a popular misconception that nuclear fusion power
is free of radioactivity; in fact the deuterium-tritium reaction that nuclear scientists are currently exploring, produces both alpha particles and neutrons. Which of the following can be inferred from the above?Solution
The deuterium—tritium reaction is given as example to prove that the popular misconception that nuclear fusion does not involve radioactivity is wrong. Hence (2) is the correct alternative. (1) and (3) contradict the passage .(4) cannot be inferred from the passage.
- Suppose both the roots of q² + kq + 49 = 0 are real and equal, then determine the value of 'k'.
I. 84x² - 167x - 55 = 0
II. 247y² + 210y + 27 = 0
l). 2p² + 12p + 18 = 0Â
ll). 3q² + 13q + 12 = 0
I. 2x² - 9x + 10 = 0
II. 3y² + 11y + 6 = 0
I. 6x2 - 47x + 77 =0
II. 6y2 - 35y + 49 = 0
I. 12a2 – 55a + 63 = 0
II. 8b2 - 50 b + 77 = 0
...I. 2y2 – 19y + 35 = 0
II. 4x2 – 16x + 15 = 0
I. 5x² - 24 x + 28 = 0  Â
II. 4y² - 8 y - 12= 0  Â
In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer Â
I. x2 – ...
I.8(x+3)+ 8(-x)=72Â
II. 5(y+5)+ 5(-x)=150Â
