WBJEE · Maths · Straight Lines
The number of points on the line \(x+y=4\) which are unit distance apart from the line \(2 x+2 y=5\) is
- A 0
- B 1
- C 2
- D Infinity
Answer & Solution
Correct Answer
(A) 0
Step-by-step Solution
Detailed explanation
Hints : \(x+y=4\) \[ \begin{aligned} & x+y=\frac{5}{2} \\ & \mathrm{PQ}=\frac{4-5 / 2}{\sqrt{2}}=\frac{3}{2 \sqrt{2}}=\frac{3 \sqrt{2}}{4} \end{aligned} \]
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