Lakshya Education MCQs

Question: Which type of spherical mirror does the inner surface and the outer surface of a polished spoon act as?
Options:
 A. Inner - concave; Outer - convex B. Inner - concave; Outer - concave C. Inner - convex; Outer - concave D. Inner - convex; Outer - convex
: A

A spherical mirror is a mirror with a curved reflecting surface. The surface may be either convex (bulging outward) or concave (bulging inward). The inner surface of a spoon acts as a concave mirror and the outer surface of the spoon acts as a convex mirror.

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More Questions on This Topic :

Question 1. Which type of mirror is used as a rear-view mirror in cars?
1.    Plane mirror
2.    Convex mirror
3.    Concave mirror
4.    None of the above
: B

Convex mirrors are commonly used as rear-view mirrors in vehicles because they give erect, virtual and diminished images of distant objects with a wider field of view. Thus, convex mirrors enable the driver to view a much larger area than would be possible with a plane mirror.
Question 2. Plane mirror is also known as convergent mirror.
1.    True
2.    False
3.    Inner - convex; Outer - concave
4.    Inner - convex; Outer - convex
: B

The radius of curvature of a plane mirror is infinite. Therefore it is neither a convergent nor a divergent mirror. Convex mirror is a divergent mirror and concave mirror is a convergent mirror. A concave mirror is called a converging mirror because it brings incoming parallel rays together. It causes these rays toconverge.
Question 3. Which amongst the following is not a characteristic of an image formed by a plane mirror?
1.    Erect
2.    Laterally inverted
3.    Virtual
4.    Diminished
: D

Plane mirrors always produce an image that is virtual, erect, laterally inverted and of the same size as the object. Also, the image distance from the mirror is always equal to the object distance from the mirror.
Question 4. A convex lens always forms a virtual image.
1.    True
2.    False
3.    Inner - convex; Outer - concave
4.    Inner - convex; Outer - convex
: B

The image formed by the convex lens can be real or virtual depending on the distance between the object and the lens.Real images only occurfor objects which are placed outside and far from the convex lens.Virtual images are formed by placing an object between focus and pole of the mirror.
Question 5. A magnified virtual image can be produced by a  ______
1.    plane mirror
2.    concave mirror
3.    convex mirror
4.    prism
: B

When the object is kept in between focus and the pole, a concave mirror forms an enlarged, virtual and erect image. A convex mirror always form diminished virtual image. A plane mirror always forms a virtual and erect image without any magnification.
Question 6. A virtual image can be formed on a screen.
1.    True
2.    False
3.    Inner - convex; Outer - concave
4.    Inner - convex; Outer - convex