# NCERT Class 11 Physics Entrance Exams Questions & Answers

NCERT Class 11 Physics Entrance Exams Questions & Answers NCERT Class 11 Physics QUESTIONS

# NCERT Class 11 Physics Entrance Exams Questions and Answers

71 There are 20 divisions in 4 cm of the main scale. The vernier scale has 10 divisions. The least count of the instrument is
A 0.005 cm
B 5.0 cm
C 0.5 cm
D 0.05 cm

72 Electron volt is a unit of
A Energy
B Magnetic Force
C Potential difference
D Charge

73 The equation of state of some gases can be expressed as Vander wal equation i.e. (P + a/v2)(V – b) = RT Where P is the pressure, V is the volume, T is the absolute temperature and a, b, R are constants. The dimensions of ‘a’ are:
A [M1L1T-1]
B [M1L-5T1]
C [M2L5T-1]
D [M1L5T-2]

74 Which of the following pairs has the same dimensions?
A Moment of Inertia and Torque
B Specific Heat and Latent Heat
C Surface Tension and Force
D Impulse and Momentum

75 One watt hour contains how many joules?
A 3.6 ? 103 J
B 10-3 J
C 3.6 ? 102 J
D 3.6 ? 108 J

76 At 4° C, the density of water is equal to
A 103 kg m-3
B 10 kg m-3
C 10-3 kg m-3
D 10-2 kg m-3

77 The dimensions of Kinetic energy is same as that of
A Work
B Momentum
C Force
D Pressure

78 The surface tension of a liquid is 70 dyne/cm. In MKS system its value is?
A 7 ? 103 N/m
B 70 N/m
C 7 ? 10-2 N/m
D 7 ? 102 N/m

79 The dimensional formula for Planck’s constant is
A [ML2T-1]
B [M2L2T-1]
C [MLT]
D [ML1T-1]