Bravia worksheet 62 question 1 is related to the concept of electromagnetic waves and their properties. Let's break down the answer into headings and HTML bullet points:

Electromagnetic Waves:
- Electromagnetic waves are transverse waves that are composed of electric and magnetic fields oscillating at right angles to each other.
- They travel through space at the speed of light (3 x 10^8 m/s) and do not require a medium to propagate.
- The electromagnetic spectrum is the range of all types of electromagnetic radiation, from radio waves to gamma rays.

Properties of Electromagnetic Waves:
- Wavelength (λ): the distance between two consecutive peaks or troughs of a wave, measured in meters (m).
- Frequency (f): the number of waves passing a given point per unit time, measured in hertz (Hz).
- Amplitude: the maximum displacement of a wave from its equilibrium position.
- Speed (v): the rate at which a wave travels through a medium, measured in meters per second (m/s).
- Relationship between wavelength, frequency, and speed: v = fλ

Bravia Worksheet 62 Question 1:
The question asks us to explain the following statement: "The wavelength of a radio wave is 10^4 times greater than that of a gamma ray, yet they both travel at the same speed." Here's how we can approach the answer:

- Radio waves and gamma rays are both types of electromagnetic waves that travel at the speed of light (3 x 10^8 m/s).
- According to the electromagnetic spectrum, radio waves have longer wavelengths (10^4 times greater) and lower frequencies than gamma rays, while gamma rays have shorter wavelengths and higher frequencies than radio waves.
- The relationship between wavelength, frequency, and speed is given by v = fλ. Since both types of waves travel at the same speed, their frequency and wavelength must be inversely proportional to each other.
- Therefore, if the wavelength of a radio wave is 10^4 times greater than that of a gamma ray, its frequency must be 10^4 times lower than that of a gamma ray.
- We can use the speed equation to confirm this relationship: v = fλ. If v is constant (the speed of light) and λ is 10^4 times greater for radio waves than for gamma rays, then f must be 10^4 times lower for radio waves than for gamma rays.
- In summary, the statement is true because radio waves and gamma rays have different wavelengths and frequencies, but they both travel at the same speed due to the inverse relationship between wavelength and frequency.