Question

1.
TIME: 1 HR
TEST-01
1 A-31 +49 and B=7+ 24, the vector having the
same magnitude as B and parallel to A is
(a) 51 + 207
(b) 151 +10​

Answer 1

∣B∣=  

7  

2

+(24)  

2

 

​  

=  

625

​  

=25

Unit vector in the direction of A will be A=  

5

3  

i

^

+4  

j

^

​  

 

​  

 

So required vector =25(  

5

3  

i

^

+4  

j

^

​  

 

​  

)=15  

i

^

+20  

j

^

​