A convex mirror of focal length f forms an image which is 1n times the object. The distance of the object from the mirror is View Solution Q3 A concave mirror of focal length f produces an image n times the size of the object. If the image is real, then the distance of the object...
A convex mirror of focal length f=-30cm faces a plane mirror, which is 10cm away from it, with the convex mirror on the left. An object sits at a distance of 5cm away from the convex mirror (directly between the two mirrors). Consider ...
A concave mirror of focal length f1 is placed at a distance of d from a convex lens of focal length f2. A beam of light coming from infinity and falling on this convex lens concave mirror combination returns to infinity. The distance d must equal View Solution Q2 An object is...
In an experiment to measure the focal length of a convex lens, the measured focal length is shorter than the actual value. What could be the cause? A. The object distance is measured inaccurately and is too large. B. The image distance is measured inaccurately and is too small. C. The...
(d) The focal length of each part will be 2f.A convex lens of focal length f cut into parts first horizontally and then vertically. Find the focal length of part A of the lens, as shown:
In the experiment of finding the focal length of a convex lens, we should use: A. A ruler and a white paper B. A protractor and a mirror C. A ruler and a concave lens D. A protractor and a white paper 相关知识点: 试题来源: ...
An object is at a distance of 20 m from a convex lens of focal length 0.3 m. The lens forms an image of the object. If the object moves away from the lens at a speed of 5 m/s, the speed direction of the image will be:
In a convex lens, if the object is placed at twice the focal length, the image formed will be: A. Virtual and enlarged B. Real and enlarged C. Real and of the same size D. Real and inverted 相关知识点: 试题来源: 解析 D。在凸透镜中,当物体位于两倍焦距处时,成的像是实像且倒立。
Find the focal length of the lens shwon in figure (a) If the light is incident form left side. (b) If the light is incident form right side. View Solution If f(V) and fR are the focal lengths of a convex lens for violet and red light respectively and FVand FR are the foca...
A concave mirror produces a virtual image that is 9 times as tall as the object. If the object is 38 cm in front of the mirror, what is the focal length of this mirror? (in units of cm) 1) An object is 24 cm away from a ...