Question

Which of the following radiation have the wavelength less than 0.3 mm?

• A. Radio
• B. Microwave
• C. Visible light
• D. Infrared

Answer 1

Answer: (C), (D)

The correct options are
C Visible light
D Infrared

Types of Radiation Wavelength

Radio waves	< 20 cm
Micro waves	0.3 mm - 20 cm
Infrared waves	800 nm - 0.3 mm
Visible light rays	400 nm - 800 nm
Ultraviolet rays	300 pm - 400 nm
X-rays	3 pm - 300 pm
Gamma rays	< 3 pm

The given table shows that radiowaves and micro waves have longer wavelengths than 0.3 mm. While infrared waves and visible light rays have lesser wavelength than 0.3 mm.