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If vec(A) is 2hat(i)+9hat(j)+4hat(k), th...

If `vec(A)` is `2hat(i)+9hat(j)+4hat(k)`, then `4vec(A)` will be `:`

A

`8hat(i)+16hat(j)+36hat(k)`

B

`8hat(i)+36hat(k)+16hat(j)`

C

`8hat(i)+9hat(j)+16hat(k)`

D

`8hat(i)+36hat(j)+16hat(k)`

Text Solution

Verified by Experts

The correct Answer is:
D
`vec(A)=2hat(i)+9hat(j)+4hat(k)`
`4vec(A)=8hat(i)+36hat(j)+16hat(k)`
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