✅ Correct Answer: JJ Thomson
Source: This question is taken from the Data Entry Operator in the Punjab Police 2020
Source: This question is taken from the Naib Tehsildar General Knowledge PPSC Past Paper
✅ Correct Answer: Isaac Newton
Source: This question is taken from the ASF Corporal Past Paper Batch 1
✅ Correct Answer: J.J Thomson
Source: This question is taken from the PMS General Knowledge Past Paper