Answer:
Explanation:
   a )
from lens makers formula 

f is focal length , r₁ is radius of curvature of one face and r₂ is radius of curvature of second face 
putting the values 

1.462 = 2 - 1 / r₂
1 / r₂ = .538
r₂ = 1.86 cm . 
= 18.6 mm .
b ) 
object distance u = 25 cm 
focal length of convex lens  f  = 1.8 cm 
image distance  v   = ?
lens formula 



.5555 - .04 
= .515 
v = 1.94 cm 
c )
magnification = v / u 
= 1.94 / 25 
= .0776 
size of image = .0776 x size of object 
= .0776 x 10 mm
= .776 mm 
It will be a real image and it will be inverted. 
  
 
        
             
        
        
        
Answer:
6.07 N
Explanation:
Given that,
Force, F = 35 N
It makes 10 degree angle with the positive x-axis.
We need to find the magnitude of the vertical component of the force. It can be given by :

So, the magnitude of the vertical component of the force is 6.07 N.