Image Formed by a Concave Mirror

Q.

If the image formed by a concave mirror is observed to be virtual, erect and larger than the object then the position of the object will be.

1. between infinity and centre of curvature

2. between the focus and centre of curvature

3. between the pole of the mirror and its principal focus

4. at centre of curvature

Q.

An object of size 2.0cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals to the radius of curvature. What will be the size of the image?

1. 0.5cm

2. 1.5cm

3. 2.0cm

4. 1.0cm

Q.

An object is placed at a distance of 2f from a concave mirror of focal length f. What is the magnification of the image?

1. -1

2. 1.5

3. 0

4. -2

Q.

Question 15
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed so that a sharp focused image can be obtained? Find the size and the nature of the image.

Q.

A concave mirror produces three times magnified (enlarged) real image of an object placed at 10 cm in front of it. Where is the image located?

Q. A convex mirror has a focal length of 18 cm. The image of an object kept in front of the mirror is half the height of the object. What is the distance of the object from the mirror?

Q.

At what distance in front of a concave mirror of focal length 30 cm should you place your face in order to obtain an image with a magnification of two?

1. 30cm

2. -15cm

3. 45cm

4. 15cm

Q. A curved mirror forms a virtual and enlarged image of an object close to it. Which mirror is used?

1. Concave mirror
2. Convex mirror
3. Plane mirror
4. Combination of convex and plane mirror

Q. A real image formed by a concave mirror is always inverted. State whether true or false.

1. True
2. False

Q. The minimum distance between the object and the image formed by a concave mirror is equal to _____.
(f is the focal length of the mirror)

1. 4f
2. zero
3. f
4. 2f

Q.

An object of height $h_1=2cm$ is placed perpendicular to the principal axis of a concave mirror of focal length 10cm. The distance of the object from the mirror is 15cm. Find the nature, position and size of the image respectively.

1. None of the above

2. Virtual and inverted, v=6cm, $h_2=0.8cm$

3. Real, inverted v=-30cm, $h_2=-4cm$

4. Real and inverted, v=30cm, $h_2=-8cm$

Q.

Find out the image position formed by concave mirror, considering the image formed by mirror as an object for concave mirror.

1. 20 $cm$, from the pole.

2. 30 $cm$, from the pole.

3. 40 $cm$, from the pole.

4. 60 $cm$, from the pole.

Q.

For a concave mirror to form a virtual image of a real object where should the object be placed?

1. Beyond C

2. Between C and F

3. At C

4. Between F and P

Q.

Locate the image by completing the ray diagram.

Q.

An object is placed at a distance of 10 $cm$from a concave mirror of radius of curvature 0.6 $m$. Which of the following statement is incorrect?

1. The image is formed at a distance of 15 cm from the mirror

2. The image formed is real

3. The image is 1.5 times the size of the object

4. The image formed is virtual and erect.

Q. State whether true or false:

1. True
2. False

Q. A $5cm$ long needle lies along the principal axis axis of a concave mirror of focal length $20cm$ in such a way that the end closer to the pole is $40cm$ from it. Find the length of the image of the needle formed by the mirror.

Q. Identify the correct position of the image of the Sun formed by the concave mirror.

1. 
2. 
3. 
4. 
5. 

Q. When an object of height 1cm is kept at a distance 4cm from a concave mirror, it's erect image of height 1.5cm is formed at a distance 6cm behind the mirror. Find the focal length of the mirror.

Q. How does the magnitude of magnification change if an object placed at the centre of curvature of a concave mirror is moved towards the focus?

1. It increases
2. It decreases
3. It remains constant
4. It becomes equal to infinity

Q.

Match the given cases of image formation with the position of the object:

1. I - d, II - c, III - b, IV - a

2. I - c, II - d, III - b, IV - a

3. I - c, II - d, III - a, IV - b

4. I - b, II - d, III - a, IV - a

Q.

A plane mirror is placed at the bottom of the tank containing a liquid of refractive index $\mu$ . P is a small object at a height h above the mirror. An observer O-vertically above P outside the liquid see P and its image in the mirror. The apparent distance between these two will be

1. 
2. 
3. 
4. 

Q.

Assume the distance between sun and mirror is infinity and the sun is much above the principal axis. Where will the image of the sun be formed?

1. at f

2. at R

3. in focal plane but below principal axis

4. in the focal plane but above principal axis

Q.

If an object is placed at the centre of curvature of a concave mirror, the image formed will be

1. All of the above

2. Of same size

3. Inverted

4. Real

Q.

Complete the ray diagram of Fig B?

Q. Up to what maximum distance from a concave mirror , the image can be obtained ? What will be the location of object for it ?

Q. Draw the ray diagrams of the geometric images for concave mirror and
also state the charactristics of images for the following : When object is at centre of curvature

Q. The image formed by a concave mirror is real, inverted and highly diminished (much smaller than the object). The object must be:

(a) between pole and focus
(b) at focus
(c) at the centre of curvature
(d) at infinity

Q. Why does obtaining the image of the sun on a paper with the help of a concave mirror burn the paper?

Q. Identify the correct position of the image of the Sun formed by the concave mirror.

1. 
2. 
3. 
4. 
5.