TS EAMCET Medical 10 May 2023 Shift 1 Paper

An Indian submarine stationed at a place in the sea is sending out SONAR signals at a frequency of 1‌kHz. SONAR waves travel at a speed of 5300kmh−1. An enemy submarine is moving towards the Indian submarine with a speed of 100kmh−1. The frequency of SONAR waves after getting reflected by the enemy submarine is