NEET 2019 P1 Question Paper - PYQ Mock Test

In which of the following devices, the eddy current effect is not used?

A soap bubble, having radius of $1\text{mm}$, is blown from a detergent solution having a surface tension of $2.5\times 10^{-2}\text{N/m}$. The pressure inside the bubble equals at a point $Z_0$ below the free surface of water in a container. Taking $g=10{\text{m/s}}^2$, density of water $=10^3{\text{kg/m}}^3$, the value of $Z_0$ is:

Which colour of the light has the longest wavelength?

A disc of radius $2\text{m}$ and mass $100\text{kg}$ rolls on a horizontal floor. Its centre of mass has speed of $20\text{cm/s}$. How much work is needed to stop it?

The displacement of a particle executing simple harmonic motion is given by $y=A_0+A\sin \omega t+B\cos \omega t$. Then the amplitude of its oscillation is given by: