NEET 2016 Question Paper - Phase-I Code B Q X - Mock Test

An electron of mass $m$ and a photon have same energy $E$. The ratio of de-Broglie wavelengths associated with them is:

When an $\alpha$ -particle of mass $m$ moving with velocity $v$ bombards on a heavy nucleus of charge $Ze$, its distance of closest approach from the nucleus depends on $m$ as:

A refrigerator works between $4^{\circ }\text{C}$ and $30^{\circ }\text{C}$. It is required to remove $600\text{calories}$ of heat every second in order to keep the temperature of the refrigerated space constant. The power required is: (Take $1\text{cal}=4.2\text{Joules}$)

A particle of mass $10\text{g}$ moves along a circle of radius $6.4\text{cm}$ with a constant tangential acceleration. What is the magnitude of this acceleration if the kinetic energy of the particle becomes equal to $8\times 10^{-4}\text{J}$ by the end of the second revolution after the beginning of the motion?

The angle of incidence for a ray of light at a refracting surface of a prism is $45^{\circ }$. The angle of prism is $60^{\circ }$. If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are: