The rotating mirror, or concave mirror, has a bright spot set inward (away from the incident light). Concave mirrors reflect light inside one place. They are used to focus on light.
A concave mirror and a convex mirror of focal lengths 10cm and 15cm are places at a distance of 70cm. An object AB of height 2cm is places at a distance of 30cm from the concave mirror. First ray is incident on the concave mirror then on the convex mirror. Find size, position, and...
Concave describes shapes that curve inward, like an hourglass. Convex describes shapes that curve outward, like a football (or a rugby ball). If you stand in front of a concave mirror, your reflection will look taller. If you stand in front of a convex mirror, the opposite will happen—...
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror or convex mirror ) ? Calculate the focal length of a sphrical mirror whose radius of curvature is 25 cm. View Solution Which of the mirrors is converging: concave or convex?
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A ___ mirror can make you look thinner. A. convex B. concave C. flat D. round 相关知识点: 试题来源: 解析 A。解析:凸面镜(convex mirror)可以使人看起来更瘦。concave是凹面的,flat是平的,round是圆的,凹面镜、平面镜和圆形的镜子没有使人看起来更瘦的这种普遍效果,所以选A。反馈 ...
The invention discloses an experimental device which can change into a convex mirror and a concave mirror. The device comprises a mirror body, an elastic reflective film, air source, and a connecting body, wherein, the elastic reflective film is fixed at the opening end of the cylindrical ...
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The principal focus is in front of the concave mirror and is behind the convex mirror. Focal length: The focal length (denoted by FP in the fig.) is the distance between the pole P and the principal focus F of a curved mirror. The focal length is half the radius of curvature. Focal...
A virtual image formed by a concave mirror is always enlarged. The image produced by a convex mirror is always closer to the mirror than it would be in a planChoose true or false for the following statement regarding concave mirrors. A concave mirror pro...