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Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 1

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 2

Test: Dual Nature of Radiation & Matter - 1 - Question 3

The work function of a photoelectric material is 3.32 eV. The threshold frequency will be equal to

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 3

Test: Dual Nature of Radiation & Matter - 1 - Question 4

Energy of a photon of green light of wavelength 5500m is (given: h = 6.62 ×10^{−34}Js^{−1}) approximately

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 4

Test: Dual Nature of Radiation & Matter - 1 - Question 5

Uniform electric and magnetic fields are produced pointing in the same direction. An electron is projected pointing in the same direction, then

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 5

Test: Dual Nature of Radiation & Matter - 1 - Question 6

In which case is electron emission from a metal not known?

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 6

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 7

Test: Dual Nature of Radiation & Matter - 1 - Question 8

Given h = 6.6 ×10^{−34} joule sec, the momentum of each photon in a given radiation is 3.3 ×10^{−29} kg metre/sec. The frequency of radiation is

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 8

Test: Dual Nature of Radiation & Matter - 1 - Question 9

If the work function of a material is 2eV, then minimum frequency of light required to emit photo-electrons is

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 9

Test: Dual Nature of Radiation & Matter - 1 - Question 10

In Thomson’s method for finding specific charge of positive rays, the electric and magnetic fields are

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 10

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 11

Test: Dual Nature of Radiation & Matter - 1 - Question 12

In a photon-particle collision (such as photon-electron collision) the quantity which is not conserved is

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 12

Test: Dual Nature of Radiation & Matter - 1 - Question 13

The specific charge for positive rays is much less than that for cathode rays. This is because

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 13

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 14

Test: Dual Nature of Radiation & Matter - 1 - Question 15

Davisson Germer experiment proves that

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 15

Test: Dual Nature of Radiation & Matter - 1 - Question 16

If the voltage across the electrodes of a cathode ray tube is 500 volts then energy gained by the electrons is

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 16

Test: Dual Nature of Radiation & Matter - 1 - Question 17

If work function of a metal plate is negligible then the K.E.of the photoelectrons emitted when radiations of 1000 Â are incident on the metal surface is

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 17

Test: Dual Nature of Radiation & Matter - 1 - Question 18

The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 eV fall on it is 4 eV. The stopping potential is

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 18

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 19

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 20

Test: Dual Nature of Radiation & Matter - 1 - Question 21

If maximum velocity with which an electron can be emitted from a photo cell is 3.75×10^{8}cms^{−1} then stopping potential is

Test: Dual Nature of Radiation & Matter - 1 - Question 22

In an experiment of photoelectric emission for incident light of 4000 Â, the stopping potential is 2V. If the wavelength of incident light is made 3000 Â, then stopping potential will be

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 22

Test: Dual Nature of Radiation & Matter - 1 - Question 23

In the above experimental set up for studying photoelectric effect, if keeping the frequency of the incident radiation and the accelerating potential fixed, the intensity of light is varied, then

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 23

Test: Dual Nature of Radiation & Matter - 1 - Question 24

Photo-electric effect can be explained only by assuming that light

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 24

Test: Dual Nature of Radiation & Matter - 1 - Question 25

Wavelength of light incident on a photo cell is 3000 Â, if stopping potential is 2.5 volts, then work function of the cathode of photo cell is

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 25

Test: Dual Nature of Radiation & Matter - 1 - Question 26

in photoelectric effect, the photoelectric current

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 26

Test: Dual Nature of Radiation & Matter - 1 - Question 27

In various experiments on photo electricity the stopping potential for a given frequency of the incident radiation

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 27

Test: Dual Nature of Radiation & Matter - 1 - Question 28

In order to increase the kinetic energy of ejected photoelectrons, there should be an increase in

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 28

Test: Dual Nature of Radiation & Matter - 1 - Question 29

Each photon has the same speed but different

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 29

Test: Dual Nature of Radiation & Matter - 1 - Question 30

Number of ejected photoelectrons increases with increase

Detailed Solution for Test: Dual Nature of Radiation & Matter - 1 - Question 30

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