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Question

The distance between the line ¯r=2^i2^j3^k+λ(^i^j+4^k)
and the plane ¯r.(^i+5^j+^k)=5

A
1033
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B
103
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C
109
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D
19
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Solution

The correct option is A 1033
Since (^i^j+4^k).(^i+5^j+^k)=0, The line is parallel to the plane.
The plane in Cartesians system is x + 5y + z = 0 and (2, –2, 3) is a point on the line.
Required distance = |210+35|1+25+1=1033

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