NUMS Mdcat 2022 | Solved with Explanation | mosaicbro.com
NUMS Mdcat 2022 | Solved with Explanation
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Review Answers:
127
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.
128
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).
129
The thermodynamic process during which the pressure is kept constant is called:
Correct Answer:C
Explanation:
An isobaric process occurs at constant pressure.
130
Energy stored in a capacitor is given by:
Correct Answer:A
Explanation:
The energy stored in a capacitor is calculated as E = ½ CV².
131
Electric field intensity is:
Correct Answer:C
Explanation:
Electric field intensity (E) is defined as force (F) per unit charge (q): E = F/q.
132
It stores electrical potential energy:
Correct Answer:A
Explanation:
A capacitor stores energy in the form of an electric field.
133
A magnitude of the current in metals is proportional to the applied voltage as long as temperature of conductor is kept constant. It is statement of:
Correct Answer:C
Explanation:
Ohm's law states V ∝ I (at constant temperature).