The angle of elevation of an aeroplane from a point on the ground is 45°. After flying for 15 seconds, the elevation changes to 30°. If the aeroplane is flying at a height of 2500 metres, then the speed of the aeroplane in km/hr. is
Which Indian city was gifted by the Portuguese as dowry to Charles II, the king of England, when he got married to the sister of the King of Portugal in 1662?
In the following figure, rectangle represents Authors, circle represents Food stylists, triangle represents Potters and square represents Cricketers. Which set of letters represents Authors who are either Food stylists or potters?