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Sunday, April 25, 2021
Will force of friction come into play when a riandrop rolls down a glass window plan?
An element a with atomic number 11 form a compound with element B with atomic number 16 what will be the formulla of the compound formed?
An element a with atomic number 11 form a compound with element B with atomic number 16 what will be the formulla of the compound formed?
हमें पता है की atom में electron 2n^2 के फॉर्मूले से भरे जाते है यह n = 1 2 3 4 5 6 कोश की संख्या होता है
electron bharne ka KLMN format |
Arrenge the following elementin the over of their decreasing matellic charetor.
Arrenge the following elementin the over of their decreasing matellic charetor.
Na , Si, Cl , Mg , Al ,
Ans. Na > Mg > Al > Si > Cl
micro organisms : friend and foe MCQ
micro organisms : friend and foe MCQ
MCQ |
1. Lactobacillus is commonly found in
Ans. Curd
2. Device used to see the micro organism is
Ans. Microscope
3. Malaria caused by
Ans. protozoa
4. Fungus used in baking of breadis
Ans. Yeast
5. AIDS is caused by
Ans. HIV
6. Which of the following drug is an antipyretic?
Ans. Paracetamol
7. What helps in the rise of bread or dosa dough?
Ans. Growth of yeast cell
8. Bacteria present in root modules of pea
Ans. Rhizobium
9. The disease caused by protoza is
Ans. Malaria
10. which bateria helps in settling of crud?
Ans. Lactobacillus
what is power?
what is power?
power :- Rate of doing work is called power.
or The work done in per unit time is called power.
its IS unit is Watt and joule per second (J/s)
शक्ति :- कार्य करने की दर शक्ति कहलाती है या इकाई समय में किया गया कार्य शाक्ति कहलाती है इसकी IS इकाई जुल प्रीति सेकंड होती है
P = work / time = j/s
P = J/s
work = force x displacement
and
force = m x accelaretion (here m for mass in kg) and (accelartion = m/s^2(m for meter and s for second) )
then
work = m x accelaretion x displacement(in meter)
then unite of work is
work = kg m/s^2 x m
then
work = kg m^2/s^2
then unit of power
power = work/s
than
power = kg m^2 /s^2xs
then
power = kg m^2 / s^3
Electromagnatic radiation :- Vibrational Spectroscopy
Vibrational Spectroscopy : Vibrational spectroscopy can be thought of by starting with a simple harmonic oscillator (SHO) model. In this ...
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Rotational Selection rules: 1. Transitions with ΔJ=±1 are allowed; Photons do not have any mass, but they have angular momentum. The conser...
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Arrenge the following elementin the over of their decreasing matellic charetor. Na , Si, Cl , Mg , Al , Ans. Na > Mg > Al &...
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Rotational energy level Molecular rotations require little energy to excite them. Pure rotation spectra occur in the microwave region of ...