TS EAMCET 2020 (Online) 14th September Evening Shift | Dual Nature of Radiation Question 33 | Physics

A light of wavelength 310 nm is used in a photoelectric experiment. The metal electrode of work function of 2.5 eV is used in the experiment. The stopping potential for the photoelectrons will be (assume, $h c=1240 \mathrm{eV}-\mathrm{nm}$ )

1.0 V

1.5 V

2.0 V

2.5 V

TS EAMCET 2020 (Online) 14th September Morning Shift

MCQ (Single Correct Answer)

-0

A radiation of energy $E$ falls on a perfectly reflecting surface. The momentum transferred to the surface is (let $c \equiv$ speed of light)

$\frac{E}{C}$

$\frac{2 E}{c}$

$E C$

$\frac{E}{c^2}$

TS EAMCET 2020 (Online) 14th September Morning Shift

MCQ (Single Correct Answer)

-0

According to the photoelectric effect, the plot of kinetic energy of the emitted photo-electrons from a metal versus the frequency of the incident radiation gives a straight line whose slope

is the same for all metals and independent of the intensity of radiation

depends only on the intensity of radiation

depends both on the intensity of the radiation and the metal used

depends on the nature of metals used

TS EAMCET 2020 (Online) 11th September Evening Shift

MCQ (Single Correct Answer)

-0

In a photoelectric effect experiment if the frequency of light is doubled, the stopping potential will

be halved

become more than double

become less than double

be doubled

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