Physics Test - ...

If a liquid is heated in weightlessness the heat is transmitted through:

Assume that light of wavelength \(600 \mathrm{nm}\) is coming from a star. The limit of resolution of telescope whose objective has a diameter of \(2 \mathrm{~m}\) is:

Two solenoids having lengths \({L}\) and \(2 {~L}\) and the number of loops \({N}\) and \(4 {~N},\) both have the same current, then the ratio of the magnetic field will be:

A \(5 \Omega\) constant wire is bent to form a ring. Find the resistance across the diameter of the wire.

A light and a heavy body have equal momenta. Which one has greater K.E?

Calculate the energy released in the following reaction.

\({ }_{3} Li^{6}+{ }_{0} {n}^{1} \rightarrow{ }_{2} {He}^{4}+{ }_{1} {H}^{3}\)

Given :

Mass of \(_{3} {Li}^{6}\) nucleus \(=6.015126 {~amu}\)

Mass of \(_{1} {H}^{3}\) nucleus \(=3.016049 {~amu}\)

Mass of \({ }_{2} {He}^{4}\) nucleus \(=4.002604 {~amu}\)

Mass of \(_{0} {n}^{1}=1.008665 {~amu}\)

Light enters into glass from air then its:

A car of mass \(m\) starts from rest and accelerates so that the instantaneous power delivered to the car has a constant magnitude \(P_{0}\). The instantaneous velocity of this car is proportional to:

The temperature of a block of iron is \(140^{\circ} F\). Its temperature on the celsius scale is: