Wave OpticsHard
Question
A man is watching two trains, one leaving and the other coming in with equal speeds of 4 m/s. If they sound their whistles, each of frequency 240 Hz, the number of beats heard by the man will be equal to : (Velocity of sound in air = 320 ms-1)
Options
A.6
B.3
C.0
D.12
= 6 HzMore Wave Optics Questions
In Young′s double slit experiment :...A motor cycle starts from rest and accelerates along a straight path at 2 m/s2. At the starting point of the motor cycle...In a biprism experiment, coherent sources are obtained by which of the following phenomenon :...An object is immersed in a fluid. in order that the object becomes invesible, it should :...A circular disc is placed in front of a narrow light source. When observation point is 1 metre from the disc, then the d...