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Physics 10 Chapter 11 - Sound - 27
1.
Which of the following is used by bats to see?
a) Sight
b) Heat
c) Light
d) None of these
2.
Which of the following is used by bats to see?
a) Heat waves
b) Water waves
c) Light waves
d) Sound waves
3.
Complete the phrase: “............... as a bat”?
a) Brave
b) Intelligent
c) Coward
d) Blind
4.
Which of the following is used by dolphins to see?
a) Water waves
b) Light waves
c) Heat waves
d) Sound waves
5.
Complete the phrase: “Blind as a ..................”?
a) Rat
b) Dolphin
c) Lion
d) Bat
6.
What is the least frequency that human ears can hear?
a) 2 Hz
b) 2000 Hz
c) 20 Hz
d) 200 Hz
7.
What is the peak frequency that human ears can hear?
a) 2 Hz
b) 2000 Hz
c) 200 Hz
d) 20,000 Hz
8.
Less than which of the following frequency humans ears are unable to hear?
a) 2000 Hz
b) 20,000 Hz
c) 200 Hz
d) 20 Hz
9.
More than which of the following frequency humans ears are unable to hear?
a) 20,000 Hz
b) 200 Hz
c) 20 Hz
d) 2000 Hz
10.
Which of the following organisms can see using sound waves?
a) Bats
b) Sharks
c) Lions
d) Rats
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