Physics Test - ...

Which among the following is correct regarding diamagnetic materials?

Choose the correct statement:

A piece of wood has dimensions \(a, b\) \(c\) Its relative density is \(d\). It is floating in water such that the side \(c\) is vertical. It is now pushed down gently and released. The time period is:

A heating element using nichrome connected to a \(230 \mathrm{~V}\) supply draws an initial current of \(3.2\) A which settles after a few seconds to a steady value of \(2.8 \mathrm{~A}\). What is the steady temperature of the heating element if the room temperature is \(27.0^{\circ} \mathrm{C} ?\) Temperature coefficient of resistance of nichrome averaged over the temperature range involved is \(1.70 \times 10^{-4 \circ} \mathrm{C}^{-1}\).

A particle is moving eastwards with a velocity of 5 m/sec. If in 10s the velocity changes by 5 m/s northwards, what is the average acceleration in this time?

While teaching in a class Mayank ask a question on the equilibrium of particle as shown in the figure and ask the student to find the weight of a body, if T₂ = 100 N. Shreya gives the correct answer. So, what is the answer given by Shreya? 

The magnitude of the difference between the individual measurement and true value of the quantity is called:

The process in which an electron escapes from the metal surface is called:

How much positive and negative charge is there in a cup of water?

____ proposed the corpuscular theory of light.