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Physics 10 Chapter 11 - Sound - 20
1.
Up to how much frequency cats can hear?
a) 180,000 Hz
b) 25,000 Hz
c) 160,000 Hz
d) 140,000 Hz
2.
Which of the following animals can hear frequencies up to maximum of 25,000 Hz?
a) Dogs
b) Bats
c) Mice
d) Cats
3.
Up to how much frequency humans can hear?
a) 20,000 Hz
b) 140,000 Hz
c) 180,000 Hz
d) 160,000 Hz
4.
Which of the following organism can hear frequencies up to maximum of 35,000 Hz?
a) Cats
b) Bats
c) Humans
d) Mice
5.
Which of the following apparatus can be used for measuring speed of sound by echo method?
a) Stopwatch
b) Flat wall
c) All of these
d) Measuring tape
6.
When the speed of sound in air was accurately measured?
a) 1387
b) 1837
c) 1738
d) 1783
7.
The members of which academy accurately measured the speed of sound in air?
a) Greek academy
b) Scottish academy
c) British academy
d) French academy
8.
At how many distance cannons were set apart by members of French academy for measuring speed of sound in air?
a) 39 km
b) 29 km
c) 49 km
d) 92 km
9.
According to members of French academy what was the speed of sound at 0oC?
a) 336 ms
-1
b) 636 ms
-1
c) 633 ms
-1
d) 346 ms
-1
10.
Which of the following animals can hear frequencies up to maximum of 35,000 Hz?
a) Cats
b) Mice
c) Bats
d) Dogs
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