Given, or Now, Also, magnification or or "},"encodingFormat":"text/html","position":2,"text":""},"comment":{"@type":"Comment","text":"For a Mirror, ."},"eduQuestionType":"Multiple choice","encodingFormat":"text/markdown","learningResourceType":"Practice problem","suggestedAnswer":[{"@type":"Answer","comment":{"@type":"Comment","text":"It is a wrong option."},"encodingFormat":"text/html","position":0,"text":""},{"@type":"Answer","comment":{"@type":"Comment","text":"It is a wrong option."},"encodingFormat":"text/html","position":1,"text":""},{"@type":"Answer","comment":{"@type":"Comment","text":"It is a wrong option."},"encodingFormat":"text/html","position":3,"text":""}],"text":"A concave shaving mirror has a radius of curvature of . It is positioned so that the (upright) image of a man's face is times the size of the face. How far is the mirror from the face?"},"name":"Quiz on Reflection of Light","typicalAgeRange":"10-17","url":"https://www.embibe.com/questions/A-concave-shaving-mirror-has-a-radius-of-curvature-of-35.0%C2%A0cm.-It-is-positioned-so-that-the-%28upright%29-image-of-a-man%27s-face-is-2.50-times-the-size-of-the-face.-How-far-is-the-mirror-from-the-face%3F/EM0503895"}
A concave shaving mirror has a radius of curvature of . It is positioned so that the (upright) image of a man's face is times the size of the face. How far is the mirror from the face?
A concave mirror has radius of curvature of It is at the bottom of a glass that has water filled up to (see figure). If a small particle is floating on the surface of water, its image as seen, from directly above the glass, is at a distance from the surface of water. The value of is close to: (Refractive index of water
A concave mirror of radius of curvature has a circular outline of radius A circular disc is to be placed normal to the axis at the focus so that it collects all the light that is reflected from the mirror from a beam parallel to the axis. For , the area of this disc has to be at least
A point object is moving uniformly towards the pole of a concave mirror of focal length along its axis as shown below. The speed of the object is . At , the distance of the object from the mirror is . The average velocity of the image formed by the mirror between time and is:
A flat mirror revolves at a constant angular velocity making revolutions per second. With what velocity (in ) will a light spot move along a spherical screen with a radius of , if the mirror is at the centre of curvature of the screen?
A concave mirror for face viewing has a focal length of . The distance at which you hold the mirror from your face in order to see your image upright with a magnification of is
A hemispherical glass body of radius 10 cm and refractive index 1.5 is silvered on its curved surface. A small air bubble is 6 cm below the flat surface inside it along the axis. The position of the image of the air bubble made by the mirror is seen :
A ray of light, travelling in the direction , is incident on a plane mirror. After reflection, it travels along the direction . The angle of incidence is
A mirror is placed at an angled of with respect to axis (see figure). A light ray travelling in the negative direction strikes the mirror. The direction of the reflected ray is given by the vector
A concave mirror of focal length , forms an image having twice the linear dimensions of the object. The position of the object, when the image is virtual, will be
A point source of light, is placed at a distance in front of the center of plane mirror of width which is hanging vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror, at a distance as shown below. The distance over which the man can see the image of the light source in the mirror is:
A spherical mirror is obtained as shown in the figure from a hollow glass sphere, if an object is positioned in front of the mirror, what will be the nature and magnification of the image of the object? (Figure down as schematic and not to scale)
An object, is placed in front of a convex mirror of focal length . A plane mirror is now placed facing the object in between the object and the convex mirror such that it covers lower half of the convex mirror. What should be the distance of the plane mirror from the object, so that there will be no parallax between the images formed by the two mirrors?
A beam of light from a source is incident normally on a plane mirror fixed at a certain distance from the source. The beam is reflected back as a spot on a scale placed just above the source . When the mirror is rotated through a small angle , the spot of the light is found to move through a distance on the scale. The angle is given by
In a car a rear view mirror having a radius of curvature forms a virtual image of a bus located from the mirror. The factor by which the mirror magnifies the size of the bus is close to
You are asked to design a shaving mirror assuming that a person keeps it at from his face and views the magnified image of the face at the closest comfortable distance of . The radius of curvature of the mirror would then be: