Which of the following statement about viscosity is not true? it
depends on areas of the surfaces in contact
occurs in fluids
is independent of the relative velocity of the layers
depends on the tangential force between the layers
Correct answer is A
No explanation has been provided for this answer.
E = E\(_1\) + E\(_2\)
E = \(\frac{E_1}{E_2}\)
\(\frac{1}{E} = \frac{1}{E_1} + \frac{1}{E_2}\)
E = E\(_1\) = E\(_2\)
Correct answer is C
If two cells of equal emf s are connected in parallel then the effective emf is equal to the emf of any one of the cells.
intensity of the incident radiation
frequency of the incident radiation
energy of the incident radiation
work function of the metal.
Correct answer is A
No explanation has been provided for this answer.
The vacuum between the double walls of a thermos flask reduces heat loss through
conduction and radiation
convection and conduction
radiation only
conduction only
Correct answer is B
No explanation has been provided for this answer.
Which of the following units is not fundamental?
Metre
Kilogram
Joule
Candela
Correct answer is C
No explanation has been provided for this answer.