NEET Physics units and measurements Test-3 July 16, 2017admin0 Comments CategoriesNEET Foundation Class-VIII NEET Physics units and measurements Test-3 1. Quantity having units but no dimensions is Intensity of sound Solid angle Strain Relative density 2. Intensity of Magnetization has the same dimensions as Magnetic susceptibility Magnetic moment Intensity of magnetizing field Magnetic permeability 3. Dimensionless quantity is Intensity level of sound Magnetic susceptibility Refractive Index all the above 4. The pair of quantities having neither units nor dimensions is Plane angle and specific gravity Magnetic permeability and Relative permittivity Coefficient of friction and coefficient of restitution Linear momentum and Angular momentum 5. Dielectric constant has the same dimensions as Stress Strain Electric capacity Electric permittivity 6. If G is the universal gravitational constant, M is the mass, R is the radius and h is the altitude, then $latex sqrt { frac { GM }{ (R+h) } } $ has the dimensions of Velocity Potential energy Force Acceleration 7. (x^{2}/mass) has the dimensions of kinetic energy. Then x has the dimensions of Pressure Torque Moment of Inertia Impulse 8. The quantity having negative dimensions in mass is Gravitational Potential Gravitational constant Acceleration due to gravity None of the above 9. The quantity having dimensions only in Temperature is Latent heat Entropy Specific heat Coefficient of linear expansion 10. The dimensional formula of Areal velocity is M^{0}L^{2}T M^{0}L^{2}T^{-1} M^{0} L^{3}T^{-1} M^{0} L T^{-2} 11. The dimensions of electric current in electric conductivity are 1 2 3 -2 12. Choose the false statement relative permittivity is a dimensionless constant Angular displacement has neither units nor dimensions Refractive index is dimensionless variable Permeability of vacuum is a dimensional constant 13. The pair of quantities having same units and dimensions is Focal power and Magnifying power Tension and surface Tension Force and Electromotive force power and electric power 14. h d G has the dimensions of (h = height, d = density, G = gravitational constant) Pressure Power Torque Acceleration 15. ( he/4π m )has the same dimensions as (h= Planck’s constant, e = charge, m = mass,) Magnetic moment Magnetic induction Angular momentum Pole strength 16. (M/Vr) has the dimensions of (M = Magnetic moment, V = Velocity, r = radius) Pole strength Electric charge Electric potential Force 17. If R is the Rydberg constant, C is the velocity and h is the Planck’s constant, then RCh has the dimensions of Power Angular frequency Wavelength Energy 18. If x times momentum is work, then the dimensions of x are LT^{-1 } L^{-1}T ML^{-1}T^{-1} MLT 19. Choose the correct statement : The proportionality constant in an equation can be obtained by dimensional analysis The equation V = u+at can be derived by dimensional method The equation y = A sin wt cannot be derived by dimensional method The equation $latex eta =frac { A }{ B } { e }^{ -Bt } $ can be derived with dimensional analysis 20. The product of Energy and Moment of Inertia has the dimensions same as 1 ) the square of linear momentum the square of angular momentum angular impulse Planck’s constant 21. The dimensional formula of magnetic induction is MT^{-1}A^{-1} MT^{-2}A^{-1} MTA^{-2} MT^{-2}A 22. The physical quantity which has dimensional formula as that of Energy/ mass x length is Force Power Pressure Acceleration 23. The SI unit of Moment of Inertia is kg/m^{2 } kgm^{2} N/m^{2} Nm^{2} 24. Dimensional formula of capacitance is M^{-1}L^{-2}T^{-4}I^{2} M^{-1}L^{-2}T^{4}I^{2} ML^{2}T^{-4}I^{2} ML^{-2}T^{4}I^{-2} 25. The modulus of elasticity is dimensionally equivalent to 1 ) Stress Surface tension 3 ) Strain Coefficient of viscosity Loading … Related posts: NEET Physics units and measurements Test-1 NEET Physics units and measurements Test-2 NEET Physics units and measurements Test-4 NEET Physics units and measurements Test-5 NEET Physics units and measurements Test-8 Powered by YARPP.