Advertisements
Advertisements
प्रश्न
Give two uses of concave mirrors. Explain why you would choose concave mirrors for these uses.
उत्तर
Two uses of concave mirrors are:
- Shaving mirrors
- By dentists, to see the teeth of patients
The reason being, an enlarged image of an object is seen when it is held within the focus of a concave mirror.
APPEARS IN
संबंधित प्रश्न
To construct a ray diagram we use two rays which are so chosen that it is easy to know their directions after reflection from the mirror. List two such rays and state the path of these rays after reflection in case of concave mirrors. Use these two rays and draw ray diagram to locate the image of an object placed between pole and focus of a concave mirror.
What is the minimum number of rays required for locating the image formed by a concave mirror for an object? Draw a ray diagram to show the formation of a virtual image by a concave mirror.
Name the mirror which can give:
an erect and enlarged image of an object.
How can a concave mirror be used to obtain a virtual image of an object? Draw a diagram to illustrate your answer.
A student has to trace the path of a ray of light passing through a rectangular glass slab for four different values of angle of incidence.
(a) Write two important precautions for this experiment.
(b) List two conclusions the student will draw based on his experiment.
Study the following ray diagram and list two mistakes committed by the student while tracing it. Rectify these mistakes by drawing the correct ray diagram to show the real position and size of the image corresponding to the position of the object AB.
Under which of the following conditions a concave mirror can form an image larger than the actual object?
In which of the following, the image of an object placed at infinity will be highly diminished and point sized?
Under which of the following conditions a concave mirror can form an image larger than the actual object?
The image formed by a concave mirror is real, inverted and of the same size as that of the object, the position of the object should be ______.
