Introduction to Waves

Q.

Which of the following are not electromagnetic waves?

1. Gamma rays

2. X-rays

3. Beta rays

4. Cosmic rays

Q.

Why is light an electromagnetic wave?

Q.

What are the characteristics of wave motion?

Q.

Why are Sound Waves cannot Polarized?

Q.

What is a plane wave physics?

Q.

In which state of matter does sound travel the
a) Slowest
b) Fastest

Q. How path difference for destructive interference is 2n-1lambda/2

Q.

Light is a longitudinal wave.

1. True
2. False

Q. Which of the following is not a wind musical instrument?

1. Flute
2. Veena
3. Clarinet
4. Mouth organ

Q.

A wave transports energy and not matter justify the statement

Q. A wave transfers energy by actual transfer of matter from one place to another.

1. True
2. False

Q.

The electromagnetic waves produced when fast-moving electrons are suddenly stopped by a metal target of a high atomic number are?

Q. Numerical
ramesh measured the time gap between lightning and thunder and found that it was 3 seconds . Assuming light covers the distance instantly . What is distance of cloud from reamesh .

Q. A train moving towards a tunnel in a huge mountain with a speed of 12m/s sounds its whistle. If the driver hears 6 beats per second and speed of sound in air is 332 m/s, the frequency of whistle is how much

Q.

During the propagation of a wave, which of the following quantity is transferred?

1. Matter

2. Energy

3. Particles

4. None of these

Q. 40.2sinusoidal waves with same wavelength and amplitude traveling in opposite direction along a string with speed 10m/s .If min time interval between two instants when the string is flat is 0.5second , the wavelength of the waves ?

Q. A body is vibrating 6000 times in 1 minute. If the velocity of sound in air is 360 m/s, find wavelength of sound in metre.

Q.

When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by:

1. Conduction

2. Convection

3. Radiation

4. All the above

Q.

____________is an example of a longitudinal wave

Q. waves require a medium for their propagation.

1. Mechanical
2. Non-mechanical
3. Light

Q. Which among the following is a transverse wave?

1. Electricity
2. Sound
3. Gravitation
4. Magnetism

Q.

A wave transport energy not matter. Justify this statement???

Q.

Electromagnetic radiation consists of electromagnetic waves, which are _____.

1. synchronized oscillations of electric as well as magnetic fields

2. asynchronized oscillations of electric as well as magnetic fields

3. oscillations of magnetic fields

4. synchronized oscillations of electric as well as gravitational fields

Q.

Which of the following are transferred in a wave?

1. Information

2. Energy

3. Particle

4. Both A or B

Q.

The ____ of a sound wave is expressed in hertz (Hz).

1. False

2. True

3. wavelength
4. time period

Q. There is a non conducting rod of length L of negligible mass with two small balls each of mass m and electric charge Q attached to its ends. The rod can rotate in a horizontal plane about a fixed vertical axis crossing it a distance L/4 from one of its ends. In what position the rod must be set so that if displaced a little from that position, it begins simple harmonic oscillations ? What would be the angular frequency of SHM then?

Q. Which of the following is not a wind musical instrument?

1. Flute
2. Veena
3. Clarinet
4. Mouth organ

Q.

What is the difference between electromagnetic waves and electromagnetic radiation?

Q. A tabla is an example of a _________ instrument.

1. percussion
2. wind
3. stringed
4. (b) and (c) above.

Q. Describe an experiment to show that sound can travel in a solid.