Image Formed by Concave Mirror

Q. A concave mirror forms virtual image when object is placed:

1. 
   At centre of curvature
   
2. 
   Between centre of curvature and focus
   
3. 
   At focus
   
4. 
   Between focus and pole

Q. Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed:
(i) at the centre of curvature of a concave mirror
(ii) between the pole P and focus F of a concave mirror
(iii) in front of a convex mirror [ 3 Marks]

Q. The distance of an object from the pole of a concave mirror is equal to its radius of curvature. The image must be which one- a) real b) inverted c) same sized d) erect?

Q. A mirror forms infinitely enlarged, real and inverted image when an object is placed in front of it. Choose the mirror used to form the image and the position of the object correctly.

1. Convex, at the centre of curvature
2. Concave, at the focus
3. Convex, at the focus
4. Concave, at the centre of curvature

Q. Assertion: Concave mirror is used by dentists.
Reason: Concave mirror gives the dentist a magnified view of the tooth.

1. 
   If both assertion and reason are true and reason is the correct explanation of assertion.
   
2. 
   If both assertion and reason are true but reason is not the correct explanation of assertion.
   
3. 
   If assertion is true but reason is false.
   
4. 
   If assertion is false but reason is true.
   

Q. If instead of definingprincipal axisas the line joining the center of curvature to mid-point of the spherical mirror, if we were to define it as the line shown below, the position of image formed for an object would change.

1. Always true
2. Always false
3. May be true for some special cases
4. Data insufficient to answer the question

Q.

Try matching the object positions to the right image positions for a concave mirror.

1. At the focus F
2. At infinity
3. Between F and C
4. Beyond C

Q. We get a virtual image in a concave mirror when the object is placed____

1. At F
2. Beyond C
3. Between the pole and F
4. At C

Q.

Try matching the object positions to the right image positions for a concave mirror.

1. At infinity
2. At the focus F
3. Between F and C
4. Beyond C

Q. The object position for a concave mirror to cast a real image of the same size as the object is:

1. At infinity
2. Between P and F
3. At C
4. Between F and C

Q. A person standing in front of a mirror finds his image erect and larger than himself. This implies that the mirror is ___.

1. concave
2. cylindrical with bulging side outwards
3. plane
4. convex

Q. An object is placed at $20m$ in front of a concave mirror. If its radius of curvature is $40m$, then the image distance is equal to:

1. $20m$
2. $40m$
3. Infinity
4. $20m$

Q. what does the poetess want to convey to the readers and how does she describe the mirror?

Q. (a) Draw ray-diagrams to show the formation of images when the object is places in front of a concave mirror (converging mirror):
(i) between its pole and focus
(ii) between its centre of curvature and focus
Describe the nature, size and position of the image formed in each case.
(b) State one use of concave mirror bases on the formation of image as in case (i) above.