1
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0
The de-Broglie wavelength associated with an electron, accelerated through a potential difference of 121 V is about
(take, Plank's constant $=h=6.6 \times 10^{-34} \mathrm{Js}$, mass of electron $=9 \times 10^{-31} \mathrm{~kg}$ )
2
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0
The value of planck's constant, if the slope of the graph of stopping potential versus frequency of incident light is $4 \times 10^{-15} \mathrm{~V}$-s is (given charge of an electron $=1.6 \times 10^{-19} \mathrm{C}$ )
3
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0
For photoelectric effect which of the following statements are true.
(I) The kinetic energies of the photoelectrons do not depend on the frequency of light.
(II) Photoelectric effect will always occur for highly intense light.
(III) The maximum kinetic energy of photoelectron does not depend upon the intensity of the light.
(IV) The escaping electron's kinetic energy is larger for larger frequency.
4
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following statements is not true?
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