EASY
9th West Bengal Board
IMPORTANT
Earn 100

Which characteristic property of a sound determines the shrillness?

Important Questions on Sound

EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 2.4.
What is the range of frequency of sound that a human ear can perceive?
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 2.4.
In which part of the human ear the three interlocked bones exist?
MEDIUM
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 3.1.
Astronauts are not able to hear their voices in a vacuum. Why?
MEDIUM
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 3.3.
What is meant by the wavelength of a transverse wave? What is the SI unit of wavelength?
MEDIUM
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 3.4.
Distinguish between compression and rarefaction.
MEDIUM
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 3.6.
What is a megaphone? How does it work?
MEDIUM
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 3.7.
Why a male voice is different from a female voice?
MEDIUM
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 7 - Sound>EXERCISE>Q 3.8.
What are ultrasonic sounds? How bats use that to catch prey?