An object is placed at a distance of \(40~\text{cm}\) from a concave mirror of a focal length of \(15~\text{cm}.\) If the object is displaced through a distance of \(20~\text{cm}\) towards the mirror, the displacement of the image will be:
1. \(30~\text{cm}\) away from the mirror.
2. \(36~\text{cm}\) away from the mirror.
3. \(30~\text{cm}\) towards the mirror.
4. \(36~\text{cm}\) towards the mirror.
Subtopic:  Reflection at Spherical Surface |
 75%
From NCERT
NEET - 2018
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Match the corresponding entries of Column 1 with Column 2. [Where m is the magnification produced by the mirror]

Column 1                         Column 2 
A. m=-2                     a. Convex mirror   
B. m=-1/2                  b. Concave mirror
C. m=+2                    c. Real image
D. m=+1/2                 d. Virtual Image

(1)A->a and c;B->a and d; C->a and b; D->c and d

(2)A->a and d; B->b and c; C->b and d; D-> b and c

(3)A->c and d; B->b and d;C->b and c;D->a and d

(4)A->b and c; B->b and c; C->b and d; D->a and d

Subtopic:  Reflection at Spherical Surface |
 62%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
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Match the corresponding entries of Column 1 with Column 2.
(Where \(m\) is the magnification produced by the mirror)
Column 1 Column 2
A. \(m= -2\) I.  convex mirror
B.  \(m= -\frac{1}{2}\) II. concave mirror 
C.  \(m= +2\) III.  real Image
D. \(m= +\frac{1}{2}\) IV.  virtual Image
A B C D
1. I & III I & IV I & II III & IV
2. I & IV II & III II & IV II & III
3. III & IV II & IV II & III I & IV
4. II & III II & III II & IV I & IV
Subtopic:  Reflection at Spherical Surface |
 75%
From NCERT
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
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To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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