Advertisements
Advertisements
प्रश्न
Define linear magnification produced by a mirror?
Advertisements
उत्तर
Linear magnification is defined as the ratio of the height of the image to the height of the object. It is taken to be positive for an image to be virtual and erect and negative when the image is real and inverted.
Magnification = height of image / height of object.
APPEARS IN
संबंधित प्रश्न
Define Radius of curvature of the spherical mirror
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
- What will be the focal length of this mirror?
- Which type of spherical mirror will it provide?
- State whether this spherical mirror will diverge or converge light rays.
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
Name the spherical mirror which (i) diverges (ii) converges the beam of light incident on it. Justify your answer by drawing a ray diagram in each case.
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
A straight stick partly dipped in water obliquely appears to be bent at the surface of the water.
The sun is seen before the sunrise and after the sunset.
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
What is the focal length (f) of a mirror?
