Question

Sun gives radiation in the form of

• A. Infra-red radiation
• B. Visible light
• C. Ultra-violet
• D. All the above

Answer 1

Answer: (D)

The radiation emitted from the sun is a mixture of three types of radiation:

• Ultraviolet rays: UV rays have a wavelength of 0.01 - 10 nm. These rays can have adverse effects like sunburn, skin cancer if exposure occurs for a long period of time.
• Visible light: Visible spectrum lies in the range of wavelength 400 - 700 nm. These rays are perceived by human eyes. A part of the visible spectrum is used by plants for photosynthesis.
• Infrared rays: These rays have a wavelength beyond the visible spectrum. Most of the radiation emitted from the sun is in the form of infrared radiation.

Hence, all the options are correct.

So, the correct answer is 'All the above'.