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Solution


Q.

2 times the distance between (0,5) and (-5,0) is:
1 8 units
 
2 5 units  
3 10 units
 
4 none of them  

Ans.

(3)

Let given points be A (0,5) and B (-5,0).
Now, 

AB=(-5-0)2+(0-5)2=25+25=50=52⇒2AB=2×52=5×2=10 units