Advertisements
Advertisements
Question
Define the following term in relation to concave mirror.
Aperture
Advertisements
Solution
The diameter of a spherical mirror is called its aperture.
APPEARS IN
RELATED QUESTIONS
A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).
A ray of light is incident normally on a plane mirror. What will be the:
- angle of incidence?
- angle of reflection?
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
Which mirror will you prefer to use as a rear view mirror in a car : plane mirror or convex mirror? Give one reason.
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find:
- the focal length of the mirror
- position of image
An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find the position and size of the image.
The sun is seen before the sunrise and after the sunset.
The minimum length of the mirror required to see the full image of the person is half ‘ of his height.
