Physics Test - ...

A point object is placed at a distance of \(40 {~cm}\) in front of a convex mirror of focal length \(40 {~cm}\) then the image will form at:

Which of the following is the function of any transmitter in the communication system?

A particle of mass M is moving in a horizontal circle of radius R with uniform speed V. When it moves from one point to a diametrically opposite point, its:

A spherical conductor of radius \(10 \mathrm{~cm}\) has a charge of \(3.2 \times 10^{-7} \mathrm{C}\) distributed uniformly. What isthe magnitude of electric field at a point \(15 \mathrm{~cm}\) from the centre of the sphere?

\(\left(\frac{1}{4 \pi \epsilon_{0}}=9 \times 10^{9} \mathrm{~N} \mathrm{~m}^{2} / \mathrm{C}^{2}\right)\)

A conducting circular loop is placed in a uniform magnetic field, B = 0.025 T with its plane perpendicular to the direction of the magnetic field. The radius of the loop is made to shrink at a constant rate of 1 mm s^-1. Find the induced emf in the loop when its radius is 2 cm, is:

The potential at a point \(P\), which is forming a corner of a square of side \(93mm\) with charges \({Q}_{1}=33 {nC}\), \({Q}_{2}=-51 {nC}\), \({Q}_{3}=47 {nC}\) located at the other three corners, is nearly:

The temperature which has same numerical value on Celsius and Fahrenheit scale is:

The magnetic field at a distance \(\mathrm r\) from a long wire carrying a current \(i\) is \(0.4\) tesla. The magnetic field at a distance \(2 \mathrm r\) is:

The total internal energy of a mole of a monoatomic gas is equal to?