Yes, for the Modern Physics section (approx 15-20% of the paper). However, you will need to supplement it with solved GATE papers for the numerical aptitude.
Unfortunately, I couldn't find a direct PDF download link for "Modern Physics" by Aruldhas. However, I can suggest some possible sources where you may be able to find the PDF: Modern Physics By Aruldhas Pdf Download
If you need a digital copy without breaking the law or your wallet, here are legitimate routes: Yes, for the Modern Physics section (approx 15-20%