PCPartPicker part list:
https://in.pcpartpicker.com/list/JqCb7h
Price breakdown by merchant: https://in.pcpartpicker.com/list/JqCb7h/by_merchant/
CPU: AMD - Ryzen 3 1200 3.1GHz Quad-Core Processor (₹8979.00 @ Amazon India)
Motherboard: MSI - B350M PRO-VDH Micro ATX AM4 Motherboard (₹4876.74 @ Amazon India)
Memory: Corsair - Vengeance LPX 8GB (2 x 4GB) DDR4-3000 Memory (₹6773.52 @ Amazon India)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (₹3500.00 @ Amazon India)
Video Card: Zotac - GeForce GTX 1050 Ti 4GB Mini Video Card (₹11324.00 @ Amazon India)
Case: Corsair - 100R ATX Mid Tower Case (₹3188.00 @ Amazon India)
Power Supply: Corsair - CXM 550W 80+ Bronze Certified Semi-Modular ATX Power Supply (₹3725.13 @ Amazon India)
Total: ₹42366.39
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-10-18 17:47 IST+0530
for extra 1.3k rupee, u can get the R3 1200 which is more decent than an i3 imo, OCable, and comes with a decent stock cooler too
Edit:
found some good 2x4 RAM at nice cost imo, only rated up to 3000mhz, but should be more than enough for your budget build
after all, ryzen lineup does benefit from the RAM speed too
1050ti + R3 1200 can handle med-high @1080p just fine
if u had extra cash, upgrading to 1060 3 GB could give u high @1080p
total extra cost is about 3k rupee