JAC 12th Commerce Result 2023
Result Declared Result Date 23 May 2023 Jharkhand Board 12th Commerce Result is Declared.
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Result Declared Result Date 23 May 2023 Jharkhand Board 12th Commerce Result is Declared.
JAC 12th Commerce Result 2023 Read More »
Result Declared Result Date 30 May 2023 Jharkhand Board 12th Arts Result is Declared.
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1. A transverse wave consists of – only crests only trough both crests and troughs rarefactions and compressions 2. Sound waves travel fastest in – Solid liquids Gases Vacuum 3. With the propagation of longitudinal waves through a medium, the quantity transmitted is – Matter Energy Energy and Matter Energy, Matter, and Momentum. 4. Doppler’s
1. in SH.M. acceleration is proportional to – Velocity Displacement Time period Frequency 2. At resonance the amplitude of forced oscillations is – minimum maximum zero None of these. 3. Time period of the second pendulum is – 1 second 2 seconds 4 seconds 5 seconds 4. Which one of the following is not a
CHAPTER-14: OSCILLATIONS Read More »
1. A real gas behaves like an ideal gas if its – both pressure and temperature are high both pressure and temperature are low the pressure is high and the temperature is low the pressure is low and the temperature is high 2. Perfect gas equation – PV = RT PV = R/T PV =
CHAPTER-13: KINETIC THEORY Read More »
1. The zeroth law of thermodynamics leads to the concept of Internal energy Heat content Pressure Temperature 2. Internal energy of an isolated system Increases Decreases Remains the same None of these 3. First Law of Thermodynamics leads to – Conservation of mass Conservation of linear momentum Conservation of energy Conservation of angular momentum. 4.
CHAPTER-12: THERMODYNAMICS Read More »
1. The S. I. unit of heat is – Joule Calorie Kelvin J/kg 2. The S. I. unit of temperature is – Joule Fahrenheit Kelvin Calorie 3. Ideal gas equation – PV=R/T PV=T/R PV=μRT PT=RV 4. Value of universal gas constant (R) is – 8.31 J mol⁻¹K⁻¹ 8.0 J mol⁻¹K⁻¹ 6.67 J mol⁻¹K⁻¹ 3.45 J
CHAPTER-11: THERMAL PROPERTIES OF MATTER Read More »
1. Unit of Pressure is- Dyne N-m Pascal (Pa) Nm² 2. Unit of Thrust is – Pascal (Pa) Erg Newton N-m² 3. Unit of Density is – Kg.m Kg.m⁻³ Kg.m² Kg.m³ 4. The dimension of Pressure is – [ML⁻¹T⁻²] [ML⁻³] [MLT⁻¹] None of these 5. The dimension of Density is- [ML⁻¹T⁻²] [ML⁻³] [MLT⁻¹] None of
CHAPTER-10: MECHANICAL PROPERTIES OF FLUIDS Read More »
1. Poisson’s Ratio is applicable to- Solid only Gas only Liquid only All of these 2. The restoring force per unit area is known as- strain elasticity stress None of these 3. The ratio of stress to strain is called- Frictional coefficient Elastic constant Coefficient of viscosity Surface tension 4. Unit of Stress is Nm⁻¹
CHAPTER-9: MECHANICAL PROPERTIES OF SOLIDS Read More »
1. Kepler’s First Law is known as- Law of orbits Law of areas Law of periods None of these. 2. Kepler’s second law is known as- Law of orbits Law of periods Law of areas None of these. 3. Kepler’s Second Law is a consequence of- Conservation of energy Conservation of linear momentum Conservation of
CHAPTER-8: GRAVITATION Read More »