Mechanical and Electromagnetic Waves

Q.

What is the difference between mechanical and non-mechanical waves?

1. Low density gaseous medium

2. Non eleastic medium

3. Colourfull medium

4. Requirement of material medium

Q.

Mechanical waves cannot travel through _____.

Q. A transverse wave can only travel through solids and liquids(water ripples), then why is light a transverse wave when it travels through air and vacuum?

Q. State true or false
A mechanical wave needs a medium for propagation.

1. True
2. False

Q. State true or false
Information can be passed through particles moving about its fixed positions and influencing the adjacent particles to do the same.

1. True
2. False

Q. Which physical properties of a medium can be studied if ultrasonic waves are passed through it?

1. Elasticity
2. Configuration of atoms
3. Temperature
4. Pressure

Q.

As a mechanical wave travels through a given medium, it loses its energy to the medium.

1. True

2. False

Q.

Consider the following statements:

Statement 1: No sound can be heard on the surface of the Moon.
Statement 2: Temperature of the surface of the Moon is very high and hence sound waves cannot be produced.

Choose the correct options.

1. Only Statement 1 is correct

2. Only Statement 2 is correct​

3. Both the Statements are incorrect

4. Both the Statements are correct

Q.

Mechanical waves do not require a medium to travel.

1. True

2. False

Q. Which of the following is a mechanical wave?
(a) Radio waves
(b) X-rays
(c) Light waves
(d) Sound waves.