NUMS Mdcat 2022 | Solved with Explanation | mosaicbro.com
NUMS Mdcat 2022 | Solved with Explanation
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Review Answers:
57
If the period of oscillation of a mass (M) suspended from a spring is 1s, then the period of 16M will be:
Correct Answer:D
Explanation:
The period (T) of a spring-mass system is proportional to the square root of the mass (T ∝ √m). If mass increases 16 times, the period increases by √16 = 4 times.
58
Loudness of the sound is directly related to:
Correct Answer:A
Explanation:
Loudness depends on the intensity (energy per unit area) of the sound wave.
59
The increase in the speed of sound in air for each degree rise above 0°C is:
Correct Answer:D
Explanation:
The speed of sound in air increases by approximately 0.61 m/s per °C rise in temperature.
60
First law of thermodynamics is based on:
Correct Answer:C
Explanation:
The first law states that energy cannot be created or destroyed, only transformed (conservation of energy).
61
The thermodynamic process during which the pressure is kept constant is called:
Correct Answer:C
Explanation:
An isobaric process occurs at constant pressure.
62
Energy stored in a capacitor is given by:
Correct Answer:A
Explanation:
The energy stored in a capacitor is calculated as E = ½ CV².
63
Electric field intensity is:
Correct Answer:C
Explanation:
Electric field intensity (E) is defined as force (F) per unit charge (q): E = F/q.