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The highest excited state that unexcited hydrogen atom can reach when they are bombarded with 12.2 eV electron is The highest excited state that unexcited hydrogen atom can reach when they are bombarded with 12.2 eV electron is December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Percentage of silver in German silver is (a) 0% (b) 1% (c) 5% (d) None of these Percentage of silver in German silver is (a) 0% (b) 1% (c) 5% (d) None of these December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Select the correct curve(s) If v = velocity of electron in Bohr’s orbit r = Radius of electron in Bohr’s orbit P. E = potential energy of electron in Bohr’s orbit K. E = kinetic energy of electtron in Bohr’s orbit Electrons falls from 7th energy level and lower levels to produce bands in the [...]

Bell metal is an alloy of (a) Cu, Zn and Sn (b) Cu, Zn and Ni (c) Cu and Zn (d) Cu and Sn Bell metal is an alloy of (a) Cu Zn and Ni (c) Cu and Zn (d) Cu and Sn Zn and Sn (b) Cu December 1, 2020 Category: Uncategorised (JEE Advanced [...]

A uniform wire of resistance R is shaped into a regular n−sided polygon (n is even), The equivalent resistance between any two corners can have. (i) the maximum value R/4 (ii) the minimum value R/n (iii) the minimum value R(n−1/n2) (iv) the minimum value R/n. A uniform wire of resistance R is shaped into a [...]

All the edges of a block with parallel faces are unequal. Its longest edge is twice its shortest edge. The ratio of the maximum to minimum resistance between parallel faces is. All the edges of a block with parallel faces are unequal. Its longest edge is twice its shortest edge. The ratio of the maximum [...]

n identical cells, each of emf ℰ and internal resistance r, are joined in series to form a closed circuit. One cell (A) is joined with reversed polarity. The potential difference across each cell, except A, is are joined in series to form a closed circuit. One cell (A) is joined with reversed polarity. The [...]

N identical cells, each emf E and internal resistance r are joined in series. Out of N cells, n cells are wrongly connected i.e., their terminals are connected in reverse of the required for series connection (n each emf E and internal resistance r are joined in series. Out of N cells n cells are [...]

The n rows each containing m cells in series are joined parallel. Maximum current is taken from this combination across an external resistance of 3Ω resistance. If the total number of cells used are 24 and internal resistance of each cell is 0.5Ω then The current i5 is December 1, 2020 Category: Cengage NEET by [...]

When an unknown resistance is connected across a series combination of two identical batteries, each of 1.5 V, the current through the resistor is 1.0 A. When it is connected across a parallel combination of the same batteries, the current through it is 0.6 A. The internal resistance of each battery is each of 1.5 [...]