NUMS Mdcat 2022 | Solved with Explanation | mosaicbro.com

NUMS Mdcat 2022 | Solved with Explanation

7 of 157 questions (Page 14 of 23)

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92 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.
93 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.
94 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).
95 The thermodynamic process during which the pressure is kept constant is called:
Correct Answer: C
Explanation: An isobaric process occurs at constant pressure.
96 Energy stored in a capacitor is given by:
Correct Answer: A
Explanation: The energy stored in a capacitor is calculated as E = ½ CV².
97 Electric field intensity is:
Correct Answer: C
Explanation: Electric field intensity (E) is defined as force (F) per unit charge (q): E = F/q.
98 It stores electrical potential energy:
Correct Answer: A
Explanation: A capacitor stores energy in the form of an electric field.
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