Mashaal Masha
Mashaal Masha
 Oct 16, 2022
0
Choose the correct options for the following questions.
The e/m value for positive rays is maximum for:
Difficulty: Easy
A:
Oxygen
B:
Nitrogen
C:
Helium
D:
Hydrogen
The nature of positive rays depend on:
Difficulty: Easy
A:
Nature of discharge tube
B:
Nature of resident rays
C:
Nature of electrode
D:
All of above
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Which of the following was discovered first:
Difficulty: Easy
A:
Charge to mass ratio of electrons
B:
Mass of electron
C:
Charge of electron
D:
All of above at same time
Which of the following particles has longest wavelength, if they have same speed:
Difficulty: Easy
A:
Proton
B:
Neutron
C:
Electron
D:
Positron
Maximum potential energy that an electron can have within the atom is:
Difficulty: Easy
A:
Equal to zero
B:
Less than zero
C:
Greater than zero
D:
Infinite
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Charge to mass ratio of electrons was discovered by:
Difficulty: Easy
A:
Milikan
B:
Rutherford
C:
J.J Thomson
D:
Chadwick
When an electric current is passed through discharge tube at low pressure, cathode rays are emitted from cathode these rays consist of:
Difficulty: Easy
A:
Alpha rays
B:
Negative particles
C:
Electromagnetic rays
D:
Positive particles
Charge of an electron is:
Difficulty: Easy
A:
$1.6\times 10^{-19}$ C
B:
$9.1\times 10^{-34}$ C
C:
$1.7588\times 10^{11}$ C
D:
$6.62\times 10^{-43}$ C
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Mass of simple electron is:
Difficulty: Easy
A:
$9.1\times 10^{31}$ kg
B:
$9.1\times 10^{-30}$ kg
C:
$1.66\times 10^{-31}$ kg
D:
$9.1\times 10^{-31}$ kg
The charge over mass ratio of electron is:
Difficulty: Easy
A:
$1.6\times 10^{-1}$ C kg^{-1}
B:
$9.1\times 10^{-31}$ C kg^{-1}
C:
$1.7588\times 10^{11}$ C kg^{-1}
D:
$6.62\times 10^{-34}$ C kg^{-1}

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