Question

iv) Two hail stones with radii in the ratio
of 1:4 fall from a great height through
the atmosphere. Then the ratio of their
terminal velocities is
(A) 1:2 (B) 1:12 (C) 1:16 (D) 1:8​

Answer 1

Answer:

1:16

Explanation:

V  

t

​

∝r  

2

 

So.  

V  

2

​

 

V  

1

​

 

​

=(  

r  

2

​

 

r  

1

​

 

​

)  

2

 

Now  

V  

2

​

 

V  

1

​

 

​

=(  

4

1

​

)  

2

 

V  

2

​

 

V  

1

​

 

​

=  

16

1

​