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Earn 100

Which of the following statement is incorrect?

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Important Questions on Physical World and Measurement

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The ratio EW of relative strength of electromagnetic force E to weak nuclear force W is, 
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Match the columns I and II
  Column I   Column II
A Stoke's law I Pressure and energy
B Turbulence II Hydraulic lift
C Bernoulli's Principle III Viscous drag
D Pascal's law IV Reynold's number

The correct match is

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Consider a particle moving along the positive direction of X-axis. The velocity of the particle is given by v=αx (α is a positive constant). At time t=0, if the particle is located at x=0, the time dependence of the velocity and the acceleration of the particle are respectively.
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If E and E0 represent the energies, t and t0 represent the times, in which of the following is dimensionally correct relation?

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A gas satisfies the relation PV5/3=K where P is pressure, V is volume and K is constant. The dimensions of constant K are
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Match the physical quantities given in List - I with dimensions in List - II.

List - I     List - II
 A Gravitational potential I M0 L2 T-2 K-1
B Stefan's constant  II M0 L2 T-2
C Permittivity III ML0 T-3 K-4
D Specific heat capacity IV M-1 L-3 T4I2

 

(The dimensions of mass, length, time, temperature and current are M,L,T,K and I respectively)

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The dimensions of σb4 where 'σ' is Stefan's constant and 'b' is Wien's constant are