Question 4791:

The speed of light in vacuum is \(3.0 \times\) \(10 \mathrm{~ms}\) if the refractive index of a transparent liquid is \(4 / 3\) then the speed of light in the liquid is

A. OAA \(\times 108 \mathrm{~ms}^{4}\)
B. \(2.25 \times 10 \mathrm{~ms}^{4}\)
C. \(3.0 \times 106 \mathrm{~ms}^{4}\)
D. \(\mathrm{AO} \times 10^{4}\)

Question 4792:

If the force on a charge of \(0.2\) coulomb In an electric field is \(4 \mathrm{~N}\), then the electric field Intensity of the field is

A. \(0.8\)
B. \(0.8 \mathrm{~N} / \mathrm{C}\)
C. \(20.0 \mathrm{~N} / \mathrm{C}\)
D. 0.2N/C
E. \(20.0 \mathrm{C} / \mathrm{N}\)

Question 4793:

If a car starts from rest arid moves with a uniform acceleration of \(10 \mathrm{~ms}\) for ten seconds, the distance it covers In the last one second of the motion is ____________

A. \(95 \mathrm{~m}\)
B. \(100 \mathrm{~m}\)
C. \(500 \mathrm{~m}\)
D. \(905 \mathrm{~m}\)
E. \(100 \mathrm{~ms}\)

Question 4794:

A block of mass \(2.0 \mathrm{~kg}\) resting on 1 smooth horizontal plane is acted upon. simultaneously by two-forces, \(10 \mathrm{~N}\) one North and \(10 \mathrm{~N}\) due East. The miagnitude if the acceleration produced by the forces on the block is ____________

A. \(10.00 \mathrm{~ms}^{2}\)
B. \(7,05 \mathrm{~ms}^{-2}\)
C. \(10.00 \mathrm{~ms}^{-2}\)
D. \(14.10 \mathrm{~ms}^{-2}\)
E. \(20.00 \mathrm{~ms}^{-2}\)

Question 4795:

A metal block of mass \(5 \mathrm{~kg}\) lles on a rough horizontal platform. If a horizontal force of \(8 \mathrm{~N}\) applied to the block through Its centre of mass just slide block on the platform, the coefficlent of limiting friction between the block and the platform is ____________

A. \(0.16\)
B. \(0.63\)
C. \(0.80\)
D. \(1.60\)
E. \(2.00\)