Physics Test - ...

Mass spectroscopy is performed ____________ for a sample.

A cricket bat is cut at the location of its center of mass as shown. Then,

A pole is vertically submerged in swimming pool, such that it gives a length of shadow \(2.15 \mathrm{~m}\) within water when sunlight is incident at an angle of \(30^{\circ}\) with the surface of water. If swimming pool is filled to a height of \(1.5 \mathrm{~m}\), then the height of the pole above the water surface in centimeters is \(\left(\mathrm{n}_{\mathrm{w}}=4 / 3\right)\)_____________.

In the relation \(p=\frac{\alpha}{\beta} \mathrm{e}^{-\frac{\alpha z}{k \theta}}, p\) is the pressure, \(z\) the distance, \(k\) is Boltzmann constant and \(\theta\) is the temperature, the dimensional formula of \(\beta\) will be:

The figure below shows three identical springs A, B, and C. When a \(4\; kg\) mass is hung on A, it descends by \(1 \;cm\). When a \(6\; kg\) mass is hung on C, it will descend by:

Two batteries A and B connected in given circuit have equal emfs E and internal resistances r₁ and r₂, respectively (r₁ > r₂).

The switch S is closed at t = 0. After a long time, it was found that terminal potential difference across battery A is zero. Find the value of R.

Two satellites of Earth, S1and S2, are moving in the same orbit. The mass of S1 is four times the mass of S2. Which of the following statements is true?

A stainless steel chamber contains Ar gas at a temperature \(T\) and pressures \(P\). The total number of Ar atoms in the chamber is \(n\). Now Ar gas in the chamber is replaced by \(CO _{2}\) gas and the total number of \(CO _{2}\) molecules in the chamber is \(\frac{n}{2}\) at the same temperature \(T\). The pressure in the chamber now is \(P ^{\prime}\). Which one of the following relations holds true? (Both the gases behave as ideal gases.)

A liquid flows through pipes of different diameters. Velocity of liquid is \(2\)\(\mathrm{ms}^{-1}\).At the point where the diameter of the pipe is \(6\) cm.The velocity of liquid at a point where the diameter of the pipe is\(3\) cm will be