A sound consists of four frequencies- 300hz, 600hz, 1200 hz and 2400 hz.A sound 'filter' is made by passing this sound through a bifucated pipe. The sound waves have to travel a distance of 50 cm more in the right branch-pipe than in straight pipe. The speed of sound in air is 300m/s. Then, which of the following frequencies will be almost completely muffled or "silenced" at the outlet?
(A) 300 hz (B) 600 Hz (C)1200 Hz (D)2400 hz
Density of a substance at 0/C is 10.6 gm/c.c and at 100/C is 10 gm/c.c coefficient of linear expansion of solid is?
1) 0.0006/C 2) 0.0004/C 3) 0.0003/C 4) 0.0002/C
when an object moves closer to a concave lens the image formed by it shifts
a] away from the lens b] first away then towards the lens c] towards the lens d] first towards and then away from the lens
The position coordinates of an object are given by x= 2t2,y=t2-4t, z=3t-5. The average velocity of the particle during the interval 0.1 sec is?
I think the question is wrong as the answer is given as root22. Can you please rectify the question?????????????
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