Physics Test - ...

Length of an inclined plane is \(5 {~m}\) and it is inclined at \(30^{\circ}\) to the horizontal. Work done to move the block up the plane with uniform velocity is \(100 {~J}\). Then work done to move the block up the plane with uniform acceleration of \(4 {~ms}^{-2}\) is \(\left(\tan 30^{\circ}=\frac{1}{\sqrt{3}}\right).\)

Measure of two quantities along with the precision of respective measuring instrument is \(A=2.5 \mathrm{~ms}^{-1} \pm 0.5 \mathrm{~ms}^{-1}, B=0.10 \mathrm{~s} \pm 0.01 \mathrm{~s}\). The value of \(A B\) will be:

Two ideal junction diodes \(\mathrm{D}_{1}, \mathrm{D}_{2}\) are connected as shown in the figure. A, \(3 \mathrm{~V}\) battery is connected between \(A\) and \(B\). The current supplied by the battery, if its positive terminal is connected to \(B\), is:

Which of the following equation represent Bernoulli's Principle?

A particle of mass \(4 {~m}\), at rest, explodes into three fragments. Two of the fragments each of mass \({m}\) are found to move with a speed \({v}\) in mutually perpendicular directions. The total energy released in the explosion is:

Which of the following option is related to charles' law:

The largest distance between a source and a destination up to which the signal is received with sufficient strength is called:

Which of the following is incorrect about the sensitivity of a moving coil galvanometer?

The objective lens of a compound microscope produces a magnification of value 10 . In order to get an overall magnification of 60 when the image is formed \(25 {~cm}\) from the eyepiece, the focal length of the eyepiece should be:

_______ rays are not electromagnetic waves.