Electrons must …………… energy to move to a higher energy level.
A) absorb
B) emit
C) radiate
D) no change
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Match the following: <del>, <mark>, <H1>, Smallest heading level, Largest heading level, The HTML element defines marked or highlighted text
Match the following: Column‘A’ Column ‘B’ (1) <del> (D) Anything that appears within<del>…</del>… element, is displayed as deleted text (2 <mark> (C) The HTML element defines marked or highlighted text (3) <H1> (B) Largest heading level (4) <H6> (A) Smallest heading level
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The maximum number of electrons in n = 3 main energy level is ………………….
Correct option is C) 18
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“If I am to die by tire bullet of a madman, I must do so smiling. There must be no anger within me.
D) Mahatma Gandhi
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Electrons in the conductor move with a constant average speed. This speed is called …………………
C) either A or B
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Electrons move in this direction ………………….
B) lower potential to higher potential
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If 100 joules of work must be done to move electric charge equal to 4 C from a place, where potential is -10 volt to another place
Given: q0 = 4 C, VA = -10 volt, VB = V volt, WAB = 100 J To Find: Potential (V) Formula: VB – VA = \(\frac{W_{AB}}{q_0}\) Calculation: From formula, V – (-10) = \(\frac{100}{4}\) = 25 ∴ V + 10 = 25 ∴ V = 15...
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The transfer of energy from one trophic level to other trophic level
(D) 10 – 20 %
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The tendency of pollutants to concentrate as they move from one trophic level to the next is …………
B) Bio – magnification
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Push a heavy box with a small force. It does not move. Now gradually increase the force, the box till does not move.
A) force increases, friction increases
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Do free electrons travel to region of higher potential or lower potential?
Free electrons would travel to regions of higher potentials as they are negatively charged.
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