Physics Test-8...

Calculate the force between an alpha particle and a proton separated by \(5.12 \times 10^{-15} m\).

Which of the following is a bad conductor of electricity?

A free neutron decays into a proton, an electron and

The speed of electromagnetic waves in vacuum depends upon the source of radiation. It:

The temperature of a place on one sunny day is 113 in Fahrenheit scale. The Kelvin scale reading of this temperature will be

Specific resistance of all metals is most affected by:

A uniform rope of length \(10 \mathrm{~m}\) and mass \(3 \mathrm{~kg}\) hangs vertically from a rigid support. A block of mass \(1 \mathrm{~kg}\) is attached to the free end of the rope. A transverse pulse of wavelength \(0.05 \mathrm{~m}\) is produced at the lower end of the rope. The wavelength of the pulse when it reaches the top of the rope is:

The value of acceleration due to gravity at Earth's surface is \(9.8 \mathrm{~ms}^{-2}\). The altitude above its surface at which the acceleration due to gravity decreases to \(4.9 \mathrm{~ms}^{-2}\), is close to: (Radius of earth \(=6.4 \times 10^{6} \mathrm{~m}\) )

Which of the following setups can be used to verify Ohm's law?

A tank, filled partially with a liquid, is subjected to uniform horizonal acceleration. Which of the following is true about the surface of the liquid in the tank?