The minimum distance btween the real image and the object in a concave mirror is :
The sun of diameter D subtends an angle of
The diameter of the image of the sun formed by the mirror is :
radians at the pole of a concave mirror of focal length f
In the case of a concave mirror :
The focal length of a concave mirror is 30 cms. If the virtual image is 3 times the size if the object, the object dstance is ;
What is the magnificationn in a rear view mirror if its radius of curvature is 1 m and the object 4.5 m from the mirror.
A shaving mirror of focal length f produces an image x times the size of the object. If the image is real,the diatance of the object from the mirror is:
An object is placed at distance of 5 cms from a concave mirror of focal length 10 cms. The distance between the object and the image is ;
A concave mirror forms a real image of an object magnified 4 times.When the object is moved 3 cms away,the magnificaton 3.The focal legth of the mirror is:
A candle is placed at 20 cms from a convex mirror
.A plane mirror is placed at distance of 12 cms from the object.
It is found that the two images coincide. The focal length of the mirror is ;
An object is in front
of a convex mirror at a distance equal to the focal length. The magnification produced is;