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प्रश्न
Define Radius of curvature of the spherical mirror
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उत्तर
The distance between the centre of curvature and between the centre of curvature and pole. It is measured in meter or cm.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- centres of curvature
A concave mirror always forms a real image.
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
What kind of mirror is required for obtaining a virtual image of the same size as the object?
Name the spherical mirror which can produce a real and diminished image of an object.
- A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- Calculate the distance of the image from the lens by using the lens formula.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- 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).
A ray of light travels from a denser medium to a rarer medium. How will it bend?
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
An object of length 4 cm is placed in front of a concave mirror at distance 30 cm. The focal length of mirror is 15 cm.
- Where will the image form?
- What will be the length of image?
Select the correct option:
A mirror forms a virtual image (diminished) of an object, whatever be the position of object:
Define the following term in relation to concave mirror.
Pole
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
Which of the following has curved reflecting surface?
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
How tall does a mirror have to be to fit an entire person’s body?
A converging lens of focal length f is placed at a distance 0.3 m from an object to produce an image on a screen 0.9 m from the lens. With the object and the screen in the same positions, an image of the object could also be produced on the screen by placing a converging lens of focal length.
