Correct option is C
Given:
f = 20 cm (negative because it's a concave mirror so, -20)
v = 60 cm
Formula Used:
Solution:
Substituting values into the mirror formula, we get
Solve for object distance
u = -30 cm
All Courses
Question
A concave mirror having focal length of magnitude 20 cm forms a real image at a distance of 60 cm from it. The object distance (in cm) is:
Free Tests
Free
Must Attempt
RRB NTPC UG Level PYP (Held on 7 Aug 2025 S1)
English
100 Questions
100 Marks
90 Mins
EnglishFree
Must Attempt
CBT-1 Full Mock Test 1
English- 100 Questions
- 100 Marks
- 90 Mins
EnglishFree
Must Attempt
RRB Group D Full Mock Test 1
English- 100 Questions
- 100 Marks
- 90 Mins
EnglishSimilar Questions
- 1)Match the following lenses/mirrors with their correct applications.
Column-I (Lenses/Mirrors): i. Concave mirror, ii. Convex mirror, iii. Convex lens, iv. Concave lens
Column-II (Application): p. Used in cameras and projectors for focusing light, q. Used in correcting myopia (short-sightedness), r. Used in vehicles for rear-viewing, s. Used in shaving to produce magnified upright image
Select the correct matching option: - 2)
A short object of length L is placed along the principal axis of a concave mirror slightly away from the focus of the mirror (u ≈ f). What will be the length of the image? (symbols carry their usual meanings)
- 3)How is the image formed by a plane mirror?
- 4)
Where should the object be placed around the concave mirror to ensure that the size of the image is the same as the size of the object?
- 5)
The centre of curvature of a concave mirror lies _______ the mirror, whereas it lies _______ the mirror for a convex mirror.
- 6)
The centre of curvature of a concave mirror lies ________ the mirror, whereas it lies _______ the mirror for a convex mirror.
- 7)
Which mirror has negative focal length?
- 8)
Which mirror is used for shaving purpose?
- 9)
Which type of mirrors are commonly used in torches, searchlights and vehicle headlights to get powerful parallel beams of light?
- 10)
Identify the correct statement(s) with respect to the reflection of light by a spherical mirror from among the following.
(A) A convex mirror can only form real and inverted images.
(B) A concave mirror can form real, inverted and virtual, erect images.
(C) Images formed by convex mirrors are either diminished, same size or enlarged depending on the position of object.
(D) Images formed by concave mirrors are either diminished, same size or enlarged
Access ‘RRB Group D’ Mock Tests with
- 60000+ Mocks and Previous Year Papers
- Unlimited Re-Attempts
- Personalised Report Card
- 500% Refund on Final Selection
- Largest Community
446k+ students have already unlocked exclusive benefits with Test Prime!
Suggested Test Series
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
1023 Tests + 2 Free Tests
RRB Group D 2025-26 Mock Test
RRB Group D 2025-26 Mock Test
903 Tests + 3 Free Tests
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
611 Tests + 3 Free Tests
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
566 Tests + 3 Free Tests
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
952 Tests + 3 Free Tests
Access ‘RRB Group D’ Mock Tests with
- 60000+ Mocks and Previous Year Papers
- Unlimited Re-Attempts
- Personalised Report Card
- 500% Refund on Final Selection
- Largest Community
446k+ students have already unlocked exclusive benefits with Test Prime!
Suggested Test Series
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
1023 Tests + 2 Free Tests
RRB Group D 2025-26 Mock Test
RRB Group D 2025-26 Mock Test
903 Tests + 3 Free Tests
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
611 Tests + 3 Free Tests
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
566 Tests + 3 Free Tests
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
952 Tests + 3 Free Tests
Similar Questions
- 1)Match the following lenses/mirrors with their correct applications.
Column-I (Lenses/Mirrors): i. Concave mirror, ii. Convex mirror, iii. Convex lens, iv. Concave lens
Column-II (Application): p. Used in cameras and projectors for focusing light, q. Used in correcting myopia (short-sightedness), r. Used in vehicles for rear-viewing, s. Used in shaving to produce magnified upright image
Select the correct matching option: - 2)
A short object of length L is placed along the principal axis of a concave mirror slightly away from the focus of the mirror (u ≈ f). What will be the length of the image? (symbols carry their usual meanings)
- 3)How is the image formed by a plane mirror?
- 4)
Where should the object be placed around the concave mirror to ensure that the size of the image is the same as the size of the object?
- 5)
The centre of curvature of a concave mirror lies _______ the mirror, whereas it lies _______ the mirror for a convex mirror.
- 6)
The centre of curvature of a concave mirror lies ________ the mirror, whereas it lies _______ the mirror for a convex mirror.
- 7)
Which mirror has negative focal length?
- 8)
Which mirror is used for shaving purpose?
- 9)
Which type of mirrors are commonly used in torches, searchlights and vehicle headlights to get powerful parallel beams of light?
- 10)
Identify the correct statement(s) with respect to the reflection of light by a spherical mirror from among the following.
(A) A convex mirror can only form real and inverted images.
(B) A concave mirror can form real, inverted and virtual, erect images.
(C) Images formed by convex mirrors are either diminished, same size or enlarged depending on the position of object.
(D) Images formed by concave mirrors are either diminished, same size or enlarged
