NEET Questions

The ionization energy of hydrogen is 13.6 eV. Express this energy in joules per mole using the following conversions: 1 eV = $1.602 imes 10^{-19}$ J and Avogadro's number = $6.022 imes 10^{23}$ $mol^{-1}$.

The Planck constant is $6.626 imes 10^{-34}$ J s. Express this in units of eV s (electron-volt seconds), given 1 eV = $1.602 imes 10^{-19}$ J.

The energy of a photon is given by $E = h

u$, where$h$is Planck's constant and$

u$is the frequency. If a new quantity$X$is defined as$X = \frac{h^2

u^3}{E}$, the dimensions of$X$ are:

A physicist uses dimensional analysis to derive an expression for the energy (E) of a particle based on its mass (m), velocity (v), and Planck's constant (h). They arrive at $E = mv^2$. Why is this result incomplete?

The mass of an electron is approximately $9.1093837 imes 10^{-31}$ kg. If this value is multiplied by the speed of light squared ($c^2 = (2.99792458 imes 10^8 m/s)^2$), what is the correct representation of the resulting energy in joules, considering significant figures?

A ball is thrown vertically upwards. Which of the following graphs best represents the variation of its kinetic energy with height?

If the dimensions of a physical quantity are $ML^2T^{-2}$, what could it represent?

The equation for kinetic energy ($KE = \frac{1}{2}mv^2$) is derived using which fundamental equations?

The equation for power ($P = \frac{W}{t}$) is derived from the relationship between work and which quantity?

A block is projected up a rough inclined plane with an initial velocity $u$. The coefficient of kinetic friction between the block and the plane is $\mu_k$. The block travels a distance $s$ up the plane before coming to rest. What is the angle of inclination $heta$ of the plane?