Question

UUSI VIUI duc Uldu
10. Does sound follow the same laws of reflection as light does?
Explain.
11. When a sound is reflected from a distant object, an echo is
produced. Let the distance between the reflecting surface and
the source of sound production remains the same. Do you
hear echo sound on a hotter day?
12.Give two practical applications of reflection of sound waves.
13. A stone is dropped from the top of a tower 500 m high into a
pond of water at the base of the tower. When is the splash
heard at the top? Given, g = 10 m sand speed of sound =
340 m s-
14. A sound wave travels at a speed of 339 m s. If its wavelength
is 1.5 cm, what is the frequency of the wave? Will it be audible?
SCIENCE
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Answer 1

Answer:

Explanation:The direction of the conventional current is from positive to the negative termianl of the battery.

Where as the electrons flow from the negative terminal of the battery to the positive terminal of the battery which is exactly opposite to the conventional direction.

Here the conventional current is nothing but from the olden days we are following this direction conventionally as the previous scientists belived that the positive charges moves always, but the positive charges cannot move in the solids.