Dual Nature of Radiation and Matter Test

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Dual Nature of Radiation and Matter Test - 73

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Weekly Quiz Competition

Question 1
4 / -1

The cathode rays have particle nature because of the fact that

A
They can propagate in vacuum

B
They are deflected by electric and magnetic fields

C
They produced fluorescence

D
They cast shadows
Question 2
4 / -1

In the phenomenon of electron discharge through gases at low pressure, the coloured glow in the tube appears as a result of

A
Collisions between the charged particles emitted from the cathode and the atoms of the gas

B
Collision between different electrons of the atoms of the gas

C
Excitation of electrons in the atoms

D
Collision between the atoms of the gas
Question 3
4 / -1

Which of the following law is used in the Millikan\'s method for the determination of charge?

A
Ampere's law

B
Stoke's law

C
Fleming's left hand rule

D
Fleming's right hand rule
Question 4
4 / -1

When the speed of electrons increase, then the value of its specific charge

A
Increases

B
Decreases

C
Remains unchanged

D
Increases upto some velocity and then begins to decrease

Solution
Question 5
4 / -1

A
Rotation of e^– clockwise and anticlockwise direction respectively

B
Rotation of e^– anticlockwise and clockwise directions respectively

C
Rotation in any direction according to convention

D
None of the above
Question 6
4 / -1

When subjected to a transverse electric field, cathode rays move

A
Down the potential gradient

B
Up the potential gradient

C
Along a hyperbolic path

D
Along a circular path
Question 7
4 / -1

In Millikans oil drop experiment, a charged drop of mass 1.8 × 10^–14 kg is stationary between its plates. The distance between its plates is 0.90 cm and potential difference is 2.0 kilo volts. The number of electrons onthe drop is

A
500

B
50

C
5

D
0

Solution
Question 8
4 / -1

From the following, what charges can be present on oil drops in Millikan\'s experiment
(Here e is the electronic charge)

A
Zero, equal to the magnitude of charge on α–particle

B
2e, 1.6 × 10^–18 C

C
1.6 × 10^–19 C, 2.5 e

D
1.5 e, e

Solution
Question 9
4 / -1

In a discharge tube ionization of enclosed gas is produced due to collisions between

A
Photons and neutral atoms/molecules

B
Neutral gas atoms/molecules

C
Positive ions and neutral atoms/molecules

D
Negative electrons and neutral atoms/molecules
Question 10
4 / -1

Cathode rays enter into a uniform magnetic field perpendicular to the direction of the field. In the magnetic field their path will be

A
Straight line

B
Circle

C
Parabolic

D
Ellipse

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Dual Nature of Radiation and Matter Test - 73

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Dual Nature of Radiation and Matter Test - 73

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Question 1

They can propagate in vacuum

They are deflected by electric and magnetic fields

They produced fluorescence

They cast shadows

Question 2

Collisions between the charged particles emitted from the cathode and the atoms of the gas

Collision between different electrons of the atoms of the gas

Excitation of electrons in the atoms

Collision between the atoms of the gas

Question 3

Ampere's law

Stoke's law

Fleming's left hand rule

Fleming's right hand rule

Question 4

Increases

Decreases

Remains unchanged

Increases upto some velocity and then begins to decrease

Solution

Question 5

Rotation of e– clockwise and anticlockwise direction respectively

Rotation of e– anticlockwise and clockwise directions respectively

Rotation in any direction according to convention

None of the above

Question 6

Down the potential gradient

Up the potential gradient

Along a hyperbolic path

Along a circular path

Question 7

500

50

5

0

Solution

Question 8

Zero, equal to the magnitude of charge on α–particle

2e, 1.6 × 10–18 C

1.6 × 10–19 C, 2.5 e

1.5 e, e

Solution

Question 9

Photons and neutral atoms/molecules

Neutral gas atoms/molecules

Positive ions and neutral atoms/molecules

Negative electrons and neutral atoms/molecules

Question 10

Straight line

Circle

Parabolic

Ellipse

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Rotation of e^– clockwise and anticlockwise direction respectively

Rotation of e^– anticlockwise and clockwise directions respectively

2e, 1.6 × 10^–18 C

1.6 × 10^–19 C, 2.5 e