Problem with inserting images in two columns paper

I have just started using LateX and i am writing my first paper in it. My question is that when i insert an image in PDF format, there is few lines of white spaces in between the text and the image. I want to get rid of it somehow as i am not able to control the position of the page image and when i increase the scale size, it jumps to the next page. I am using two columns paper writing format. The way i am doing is given below:

\begin{figure}[h]
\centering
\includegraphics[scale=0.075]{Dualhop1}
\caption{A single Dual-hop Backhaul Network Model}
\label{Figure. 1}
\end{figure}


• Try running pdfcrop on your image to ensure there's no border in the pdf itself. (Also, welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format.) – Sean Allred Nov 21 '15 at 18:30
• Hi Sean, the pdfcrop worked. Thank you. I am glad that i didn't switched back to MS Word as it is very difficult and gets irritating if you are new to it. Anyways, Thank you. – A Ahmed Nov 21 '15 at 19:15

Your image might have a border of its own. To remove it, you can use the pdfcrop program included in the major TeX distributions:
$ls paper.tex my-figure.pdf$ pdfcrop my-figure.pdf

Use my-figure-crop in your TeX document instead of my-figure. (Of course, you can simply delete the old and rename the new, too.)
• Simply use the new my-figure-crop.pdf document instead of my-figure.pdf. These commands are done in a terminal (aka command prompt) outside of TeX. – Sean Allred Nov 21 '15 at 20:09