Advertisements
Advertisements
Question
Give two characteristics of the image formed by a concave lens.
Solution
Two characteristics of image are
- It is always virtual and upright (ERECT).
- It is always diminished.
RELATED QUESTIONS
Where must the object be placed for the image formed by a converging lens to be:
virtual, upright and larger than the object?
A ray of light is going towards the focus of a concave lens. draw a ray diagram to show the path of this ray of light after refraction through the lens.
Things always look small on viewing through a lens. What is the nature of the lens?
Which type of lens is
a diverging lens? Explain your answer with diagrams.
State one practical use each of convex mirror, concave mirror, convex lens and concave lens.
An object 60 cm from a lens gives a virtual image at a distance of 20 cm in front of the lens. What is the focal length of the lens? Is the lens converging or diverging? Give reasons for your answer.
Only one of the following applies to a concave lens. This is:
(a) focal length is positive
(b) image distance can be positive or negative
(c) height of image can be positive or negative
(d) image distance is always negative
State two applications of a concave lens.
Express power of a concave lens of focal length 50 cm with its sign.
Convex lens : converging : : concave lens : _______
