Which of the following types of electromagnetic waves is ...
Which of the following types of electromagnetic waves is used in night vision goggles?
Microwaves
Ultraviolet waves
Infrared waves
Radio waves
Correct answer is C
Infrared waves are used in night vision goggles because they can penetrate the darkness and allow people to see objects that are not visible to the naked eye
Which of the following statements about friction is NOT correct? ...
The depolarising agent in a Leclanche cell is? ...
Which of the following physical qualities affects the saturated vapour pressure of a liquid?...
Ice cubes are added to a glass of warm water. The glass and water are cooled by ...
The small droplets of water that form on the grass in the early hours of the morning is ...