سیکنڈ پینڈولم کا وقت کی مدت ______ سیکنڈ ہے۔
Explanation
A seconds pendulum is defined as a pendulum with a time period of 2 seconds — 1 second for a swing in one direction and 1 second for the return.It completes one full oscillation in 2 seconds, making it useful for regulating clocks.
Additional Information:
- 1 second → Half oscillation of a seconds pendulum
- 0.1 second → Very fast oscillating system
- 2 seconds → Time period of a seconds pendulum
- 0.5 second → Faster pendulum, shorter length than seconds pendulum
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A. Murree
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B. Karachi
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C. K2
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D. Lahore
Explanation
The slower motion of a pendulum is due to a longer period, which is related to the weaker gravitational force at higher altitudes
K2, being a very high mountain, has a significantly lower value of acceleration
Due to gravity, cities like Karachi, Murree, or Lahore result in a slower pendulum motion.
مندرجہ ذیل میں سے کس جگہ پر ایک سادہ لاکٹ کی حرکت تیز ہوتی جاتی ہے؟
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A. Lahore
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B. None of these
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C. Muree
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D. Karachi
Explanation
- The motion of a simple pendulum depends on gravitational acceleration (g), which increases with higher altitude.
- Murree is at a higher elevation, so g is slightly higher, making the pendulum move faster.
لاکٹ کی مدت اس کے _____ کے ذریعہ طے کی جاتی ہے؟
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A. Mass
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B. Length
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C. None of these
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D. Amplitude
Explanation
- The period of a simple pendulum is directly proportional to the square root of its length (T ∝ √L).
- Mass and amplitude do not affect the period in an ideal simple pendulum.
آزادانہ طور پر گرتی لفٹ میں ایک سادہ لاکٹ کا وقت کیا ہوگا؟
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A. 0
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B. None of these
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C. ∞
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D. √1/2g
Explanation
- In a freely falling lift, both the pendulum and its support fall with the same acceleration (g), creating a weightless condition.
- Since there is no restoring force (no effective gravity), the pendulum does not oscillate, leading to an infinite time period.
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A. 1.5 s
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B. 3.0 s
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C. 1.0 s
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D. 2.0 s
Explanation
T = 2π√(L/g)
= 2π√(1/9.8)
≈ 2.006 s
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A. Increase
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B. Remain unaffected
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C. None of these
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D. Decrease
Explanation
If mass of bob of simple pendulum increase its time period will unaffected.
As time period only depends only depends upon length of pendulum and acceleration due to gravity at that position.
T=2π√lg
T = time period
l= length of pendulum
g= Acceleration at the position of simple pendulum.
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