If for
Explantion for the correct option:
Step 1: Representation of given details in form of a diagram
We have to find the length of the CD.
Given, that the equation of the plane is
As
Substituting,
Step 2: Finding the direction ratio of
The formula for Direction Ratio:
Direction ratio of
As the direction ratio of
We can write it as,
Step 3: Finding the value of ‘a’
From equations (1) and (2),
Therefore, substituting the value of ‘
Let us assume
Substituting in
Substituting
Step 4: Finding the length of BD
Step 5: Finding the distance of BC
Step 6: Finding the distance of CD
Hence, the correct answer is an option (D).