KVPY SX SB Exam 19-Nov-2017 Question Paper

Question : 18 of 120

Marks: +1, -0

The sound of a cannon firing is heard one second later at a position B than at position A. If the speed of sound is uniform, then

The positions A and B are foci of a hyperbola, with cannon's position on one branch of the hyperbola
the position A and B are foci of an ellipse with cannon's position on the ellipse
One of the positions A,B is focus of a parabola with cannon's position on the parabola
It is not possible to describe the positions of A, B and the cannon with the given information

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