Question

QUESTION

_______________________________

See the attachment & solve it

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Username - Harsh Pratap Singh ​

Answer 1

hey mate, here is ur answer

∣∣a→∣∣=a and λ≠01

∣∣λa→∣∣=1

|λ|∣∣a→∣∣=1

|λ|a=1

a=1|λ|

Answer 2

Answer:

$answer \: (d)$

Vector λ

a

is a unit vector if ∣λ

a

∣=1.

Now,

∣λ

a

∣=1

⇒∣λ∣∣

a

∣=1

⇒∣

a

∣=

∣λ∣

1

,[λ



=0]

⇒a=

∣λ∣

1

,[∵∣

a

∣=a]

Hence, vector λ

a

is a unit vector if a=

∣λ∣

1

Thus the correct answer is D.