NEET 2023 Question Paper Mock Test

The minimum wavelength of X-rays produced by an electron accelerated through a potential difference of $V$ volts is proportional to:

A Carnot engine has an efficiency of $50\%$ when its source is at a temperature $327^{\circ }\text{C}$. The temperature of the sink is:

A bullet is fired from a gun at the speed of $280{\text{m s}}^{-1}$ in the direction $30^{\circ }$ above the horizontal. The maximum height attained by the bullet is ($g=9.8{\text{m s}}^{-2},\sin 30^{\circ }=0.5$):

In a series LCR circuit, the inductance $L$ is $10\text{mH}$, capacitance $C$ is $1\mu \text{F}$ and resistance $R$ is $100\Omega$. The frequency at which resonance occurs is:

Given below are two statements:Statement I: Photovoltaic devices can convert optical radiation into electricity.Statement II: Zener diode is designed to operate under reverse bias in breakdown region.In the light of the above statements, choose the most appropriate answer: