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. Virtual, erect, and magnified.
B. Virtual, erect, and diminished.
C. Real, inverted, and magnified.
D. Real, inverted, and of the same size.
Answer: Option D
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
LED works on the principle of
A. Field emission
B. Electroluminescence
C. Thermionic emission
D. Photoelectric effect

Correct Answer: Option B


Explanation:
Recombination of electrons and holes emits light in forward-biased p-n junction.

This question belongs to: Science Physics
Question #2
An object is placed at 2F of a convex lens. Image formed is
A. Virtual, erect, magnified
B. Real, inverted, same size
C. Real, inverted, diminished
D. Virtual, inverted, same size

Correct Answer: Option B


Explanation:
At 2F, image also at 2F, real inverted same size. Used in photocopiers.

This question belongs to: Science Physics
Question #3
The time period of a simple pendulum on the surface of the moon compared to its time period on Earth is:
A. The same
B. Zero
C. Decreased
D. Increased

Correct Answer: Option D


Explanation:
The time period of a pendulum is T = 2 * pi * sqrt(L/g). The acceleration due to gravity on the moon (g_moon) is roughly 1/6th of that on Earth (g_earth). Since g decreases, and T is strictly inversely proportional to the square root of g, the time period T must increase. The pendulum will swing much slower.

This question belongs to: Science Physics