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The direction cosines of a line satis...

The direction cosines of a line satisfy the relations `lambda(l+m)=na n dm n+n l+l m=0.` The value of `lambda,` for which the two lines are perpendicular to each other, is a. `1` b. `2` c. `1//2` d. none of these

A

`Deltaz xxDeltap_(z)ge(h)/(4pi)`

B

`DeltaExxDeltat ge(h)/(4pi)`

C

`Deltax xxDeltap_(y)ge(h)/(4pi)`

D

`Deltap_(y) ge Deltap_(z) ge(h)/(4pi)`

Text Solution

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The correct Answer is:
A, B
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