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Questions and Answers
Which device can be used to change the direction of a beam of light by 90 degrees?
Which device can be used to change the direction of a beam of light by 90 degrees?
- Concave lens
- Plane mirror (correct)
- Concave mirror
- Convex lens
What type of waves are used in the functioning of a simple electric motor?
What type of waves are used in the functioning of a simple electric motor?
- Sound waves
- Mechanical waves
- Radio waves
- Electromagnetic waves (correct)
Which form of electromagnetic waves is commonly used in medical imaging?
Which form of electromagnetic waves is commonly used in medical imaging?
- Microwaves
- Ultraviolet waves
- Infrared waves
- X-rays (correct)
What type of images are formed by a convex lens for objects placed beyond its focal point?
What type of images are formed by a convex lens for objects placed beyond its focal point?
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