Hi aspirant,

For second excited state:

n=3 , We know that energy of a particle in an energy level is given by -13.6*z^2/n^2.

Therefore the energy of He+ ion  in second excited stage is: -13.6*2^2/3^2 = -54.4/9 = -6.04 eV.

Note- For helium, atomic number (z=2)

Hope it helps!!

Hello Candidate,

In order to answer your particular question, it would be much better if you provide more insights and details regarding what's your specific very of interest because from this insufficient information it's not gonna help me to provide you with the exact solution for the same.

If you

As per my assumption the hen has come first then egg.

Because life start with one cell species like amoeba etc.

there are an analogy for it.A sculpture make first statue then make a mold(sancha) and after that make many statue by that mold . So mold work like a

Firstly you should ask this mentioning the chapter. Secondly there are no such deductions of concepts in Biology syllabus. The chapter and the portions in NEET 2021 are provided below:

• From class XI:

Diversity in Living World

Structural Organization in Animals and Plants

Cell Structure and Function

Plant Physiology

Human

Not BARC and DRDO, But ISRO does have Jobs for Earth & Planetary Science Postgraduates, in its IIRS Remote Sensing Division, subject to Advertisements. You may even find jobs with Geology and Mining Agencies as well as Geotechnical and Drilling Organizations.

You might prepare for the UPSC Combined Geo Scientist

You have great faculty, infrastructure and research facilities as far as Earth System Science, Mining, Geology & Geophysics Departments are concerned at IIT Kharagpur. Regarding placements  yeah you do have fair share of Placements with Companies like Halliburton, Schlumberger, Cairn (Vedanta) and couple of more Petroleum/Oil& Gas Companies. Earlier you

Hello Aspirant,

To secure a job as a seismologist you must posses a 10+2 education with science stream that is physics, chemistry and mathematics followed by undergraduate and post graduate degrees in seismology. The main aspect of your job as a seismologist / earth Scientist is to locate the source,

Hi there,

So The distance between moon and earth is 3,84,400 km which is about 238,855 miles. The distance between earth and moon is measured by two ways : lunar eclipse and parallax.

It takes about 3 days for a spacecraft to reach the Moon.

Hope this helps!!

Hello candidate,

The main difference between an earth wire and a neutral wire lies in the main functioning of both the wires- An earth wire acts basically as a conductor that provides a low powered -impedance path to the earth and prevents hazardous voltages from appearing on equipment, where as