On which of the following does the magnifying power of a telescope depends 

a) 
The focal length of the objective only 
b) 
The diameter of aperture of the objective only 
c) 
The focal length of the objective and that of the eye piece 
d) 
The diameter of aperture of the objective and that of the eye piece 
On which of the following does the magnifying power of a telescope depends 

a) 
The focal length of the objective only 
b) 
The diameter of aperture of the objective only 
c) 
The focal length of the objective and that of the eye piece 
d) 
The diameter of aperture of the objective and that of the eye piece 