Advertisements
Advertisements
प्रश्न
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
उत्तर
The letters on the front of an ambulance are written laterally inverted, so the driver of the vehicle moving ahead of the ambulance reads these words laterally inverted as AMBULANCE in his rearview mirror and gives side to pass the ambulance first.
APPEARS IN
संबंधित प्रश्न
We can obtain an enlarged and erect image by a convex mirror.
What do you mean by the term dispersion?
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
For what position of object, the image formed by a concave mirror is magnified and erect?
Is real image always inverted?
Define the term Aperture.
The following Figure shows a concave mirror MM' on which a ray of light incident from a point P gets reflected to meet the principle axis at O.
(a) Find, by construction, the position of the centre of curvature of the concave mirror.
(b) Write down the value for the radius of curvature of the mirror.
(c) Calculate the focal length of the mirror.
(d ) Which relation is used in deducing the focal length from the radius of curvature?
