Advertisements
Advertisements
प्रश्न
The concave reflecting surface of a torch got rusted. What effect would this have on the beam of light from the torch?
Advertisements
उत्तर
The beam of light from the torch will be diffused with lower intensity due to the rusted reflecting surface.
APPEARS IN
संबंधित प्रश्न
Draw ray diagrams to show the principal focus of a convex mirror.
To construct a ray diagram we use two rays of light which are so chosen that it is easy to determine their directions after reflection from the mirror. Choose these two rays and state the path of these rays after reflection from a concave mirror. Use these two rays to find the nature and position of the image of an object placed at a distance of 15 cm from a concave mirror of focal length 10 cm.
Define (i) principal focus of a concave mirror, and (ii) focal length of a concave mirror.
If an object is placed at the focus of a concave mirror, where is the image formed?
If the object is moved further away from the mirror, what changes are there in the position and size of the image?
A concave mirror cannot be used as:
(a) a magnifying mirror
(b) a torch reflector
(c) a dentist's mirror
(d) a real view mirror
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.
For a real object, which of the following can produce a real image?
A concave mirror of focal length 20 cm forms an image having twice the size of object. For the virtual position of object, the position of object will be at ______.
Which type of mirror is used in the following?
Floodlights
