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Quiz 6
Mdcat-past-papers - NUMS - Physics Quiz
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Board: NUMS | Subject: Physics |
101. Loudness of sound is directly related to:
Intensity of sound
Frequency of sound
Wavelength of sound
Pitch of sound
102. The increase in speed of sound in air for each degree rise above 0°C is:
0.4m/s
0.51m/s
0.81m/s
0.61m/s
103. The speed of sound in air does not depend on:
Density of medium
Pressure
Temperature
Moisture
104. In Doppler effect if listener moves towards a stationary source then:
Observed frequency is greater than original frequency
Observed frequency is less than original frequency
Observed frequency is equal to original frequency
Observed frequency is independent of original frequency
105. In a certain process, 400J of heat energy is supplied to a system and at the same time 150J of work done by the system. The increase in internal energy of system is
150J
300J
250J
500J
106. If 42 heat is transferred to the system during expansion, what is the change in internal energy? When work done is 32 J ?
74 J
116 J
10 J
106 J
107. The bicycle pump works on the basis of:
1st law of thermodynamics
2nd law of thermodynamics
Law of conservation of energy
Law of entropy
108. The 1st law of thermodynamics is the generalization of the law of conservation of:
Mass
Energy
Charge
Momentum
109. A process in which all the heat energy is used for increasing internal energy of the system is known as:
Isobaric
Isochoric
Isothermal
Adiabatic
110. In molar specific heat, the equation Cp − Cv = R shows that:
Cp > Cv
Cp < Cv
Cp = Cv
Cp = constant
111. First law of thermodynamics is based on:
Law of conservation of momentum
Law of conservation of mass
Law of conservation of charge
Law of conservation of energy
112. The thermodynamic process during which the pressure is kept constant is called:
Isochoric process
Adiabatic process
Isobaric process
Isothermal process
113. If we double the separation between two charges, then Coulomb's force will become:
Doubled
Half
4-times
¼
114. The dimension of magnetic field strength is same as that of:
Magnetic flux
Magnetic induction
Work done
Magnetic force
115. NaCl dissolves quickly in water due to:
Low εr
High εr
εr = 0
εr = ∞
116. Electric field intensity is:
force per unit mass
Force per unit tesla
Force per unit charge
force/watt
117. When a charged particle enters the magnetic field parallel, it will:
Direct towards north
Direct towards south
move straight
Move in circular path
118. The electric field at a distance of 10cm from a 2μc point charge is:
1.8 C
180 C
18 C
1800 C
119. Two +ve point charges placed 2m apart. Electric potential at midpoint will be:
Added to double
Reduced to half
Remains same
Cancel each other
120. At midpoint P: 4µC and 4µC
V = 0, E ≠ 0
V = 0, E = 0
V ≠ 0, E = 0
V ≠ 0, E ≠ 0
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