If an object is placed at the center of curvature of a concave mirror, the image formed is: MCQ with Answer and Explanation

If an object is placed at the center of curvature of a concave mirror, the image formed is:
A. Real, inverted, and magnified.
B. Virtual, erect, and diminished.
C. Real, inverted, and of the same size.
D. Virtual, erect, and magnified.
Answer: Option C
Solution (By JKSSB Mock Tests)
For a concave mirror, when an object is placed exactly at the center of curvature (C), the image is also formed at C. The image is real (can be captured on a screen), inverted (upside down), and exactly the same size as the object. Magnification in this specific case is exactly -1.

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Practice More Physics Questions

Question #1
The value of g at the centre of Earth is
A. Infinite
B. Zero
C. 4.9 m/s²
D. 9.8 m/s²

Correct Answer: Option B


Explanation:
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This question belongs to: Science Physics
Question #2
A stone is thrown vertically upward with velocity 49 m/s. The time after which it returns to thrower is (g=9.8)
A. 10 s
B. 5 s
C. 15 s
D. 2.5 s

Correct Answer: Option A


Explanation:
Time of flight T = 2u/g = 2×49/9.8 = 98/9.8 = 10 s. Up and down symmetric. Max height = u²/(2g) = 122.5 m.

This question belongs to: Science Physics
Question #3
When a wave travels from one medium to another, which of its properties never changes?
A. Frequency
B. Wavelength
C. Velocity
D. Amplitude

Correct Answer: Option A


Explanation:
When a wave (like light or sound) changes mediums, its velocity changes due to the new medium's optical or mechanical density. Wavelength changes proportionally with velocity (v = fλ). However, frequency is determined solely by the source generating the wave and the energy of the photons/particles, and it remains absolutely constant.

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