@priyanshuj22511 Most likely your fan is clogged with dust or the thermal paste has dried up. To check this, download and install a program called HWMonitor.
You can simulate a load by running a program called Prime95.
If your CPU temperature is close to 90 degrees and up, it is a clear sign that there is a thermal problem.
Also check if you can hear the laptop's fan when the temperature is high.
You can follow [link|https://youtu.be/LXqEZhzK1iM|this|new_window=true] guide to disassemble the laptop and this [guide|744|guide|new_window=true] to reapply thermal paste.
If the thermal paste replacement does not work, you will need a replacement fan.