The issue may be absent in some Laptops and there are many reasons for a laptop to get overheated like Bios Upgrade, Issue with hardware etc.
But I solved this issue by installing a software named Jupiter.
Jupiter is a Linux Applet that improves battery life of portable linux computer by controlling the amount of power consumed by hardware. This helps in reducing the overall temperature of Laptop.
Jupiter Applet has 3 different Performance modes like Maximum Performance, High Performance and Power Saver. It also provides easy options to adjust screen resolution and video displays.
How to Install Jupiter
sudo add-apt-repository ppa:webupd8team/jupiter
sudo apt-get update
sudo apt-get install jupiter
May require reboot sometimes.