The image formed by a concave lens is always MCQ with Answer and Explanation

The image formed by a concave lens is always
A. Virtual, erect, diminished
B. Virtual, inverted, magnified
C. Real, inverted, diminished
D. Real, erect, magnified
Answer: Option A
Solution (By JKSSB Mock Tests)
Concave lens diverges light, always forms virtual, erect, diminished image on same side as object. Used in spectacles for myopia.

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Practice More Physics Questions

Question #1
The near point of a normal human eye is
A. 50 cm
B. 25 cm
C. 100 cm
D. Infinity

Correct Answer: Option B


Explanation:
25 cm for young adult with normal vision.

This question belongs to: Science Physics
Question #2
In standard AC household supply in India, the frequency of the alternating current is 50 Hz. How many times per second does the current change its direction?
A. 100 times
B. 25 times
C. 0 times
D. 50 times

Correct Answer: Option A


Explanation:
A frequency of 50 Hz means there are 50 complete wave cycles per second. A single complete sinusoidal cycle consists of one positive half-cycle and one negative half-cycle. Therefore, the current reaches zero and reverses its direction exactly twice during each complete cycle. For 50 cycles, the current changes direction 50 * 2 = 100 times per second.

This question belongs to: Science Physics
Question #3
A train 150 m long running at 60 km/h crosses a man walking at 6 km/h in opposite direction. Time taken is
A. 9 s
B. 6 s
C. 15 s
D. 12 s

Correct Answer: Option A


Explanation:
Relative speed = 60+6 = 66 km/h = 66×5/18 = 55/3 m/s. Time = distance / relative speed = 150 / (55/3) = 450/55 = 8.18 s ≈ 9 s. Actually 450/55=8.18, nearest 9 s. Option B.

This question belongs to: Science Physics