Question

4.When a vector A is multiplied by a negative number -2 O (a) Its magnitude becomes a times, direction remains same asĀ O (b) Its magnitude becomes 1 times, direction becomes opposite toĀ (c) Its magnitude remains same and direction also remains same asĀ O O (d) Its magnitude remains same, direction becomes opposite toĀ​

Answer 1

Given : vector A is multiplied by a negative number -2

To Find : correct options:

(a) Its magnitude becomes 2  times, direction remains same as Ā  

(b) Its magnitude becomes 2 times, direction becomes opposite to Ā

(c) Its magnitude remains same and direction also remains same asĀ  

(d) Its magnitude remains same, direction becomes opposite toĀ​

Solution:

vector A is multiplied by a negative number

- 2

So magnitude of vector becomes 2 times

as its multiplied by - ve

Hence Direction of vector becomes opposite

Hence  Its magnitude becomes 2 times, direction becomes opposite to Ā

is Correct option

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