5.7M Earthquake Jolts North Bengal   An earthquake of magnitude 5.7 on Richter scale jolted Tripirtaon Tuesday afternoon.Mild tremors were felt across northeast India.  Tremors were felt across Assam and Northeast India as an earthquake with a magnitude of 5.5 hit the India-Bangladesh border. Its epicentre was near Ambassa 59 km from Dhaka. The quake also jolted Myanmar and Bhutan.  There has been no report of damages. Last year a study had warned of a huge earthquake building beneath…