Convex Mirrors

Q.

Convex mirrors are used as rear view mirrors?

1. Concave

2. Plain

Q.

Convex mirrors are used as rear view mirrors?

1. True

2. False

Q. Which of the following mirror can form a full size virtual image, if the aperture of the mirror is small?

1. Concave mirror
2. Plane mirror
3. A combination of concave and a plane mirror
4. A convex mirror

Q. If the image formed by a mirror is upright and diminished irrespective of the distance between the object and the mirror, what can you say about the type of mirror?

1. Convex mirror
2. Concave mirror
3. Plane mirror
4. Can’t say

Q. Which of the following mirror can form a full size virtual image, if the aperture of the mirror is small?

1. concave mirror

2. plane mirror

3. a combination of concave and plane mirror

4. a convex mirror

Q. Choose the wrong statement

1. A concave mirror can be used to concentrate the incident rays at a particular point.
2. A concave mirror can form a magnified virtual image.
3. A convex mirror can be used to concentrate the incident rays at a particular point.
4. A convex mirror can form an enlarged virtual image.

Q. Convex mirrors produce virtual images only.

1. False
2. True

Q.

Convex mirror is also known as a divergent mirror.

1. True

2. False

Q. An object is placed in front of a convex mirror at $60m$ from the mirror. Its radius of curvature is $40m$. The object starts moving towards the mirror at $20m{s}^{-1}$. Find the average speed of the image after a time interval of 2 seconds?

1. $10m{s}^{-1}$
2. $20m{s}^{-1}$
3. $2.5m{s}^{-1}$
4. $5m{s}^{-1}$

Q. Side mirrors in vehicles are ___________.

1. plane mirrors
2. concave mirrors
3. parabolic mirrors
4. convex mirrors