1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
When photons of energy h$$\upsilon $$ fall on an aluminimum plate (of work function E0), photoelectrons of maximum kinetic energy K are ejected. If the frequency of radiation is doubled, the maximum kinetic energy of the ejected photoelectrons will be
A
K + h$$\upsilon $$
B
K + E0
C
2K
D
K.
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A photocell employs photoelectric effect to convert
A
change in the frequency of light into a change in the electric current
B
change in the frequency of light into a change in electric voltage
C
change in the intensity of illumination into a change in photoelectric current
D
change in the intensity of illumination into a change in the work function of the photocathode.
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The momentum of a photon of energy 1 MeV in kg m/s will be
A
5 $$ \times $$ 10$$-$$22
B
0.33 $$ \times $$ 106
C
7 $$ \times $$ 10$$-$$24
D
10$$-$$22
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
In a discharge tube ionization of enclosed gas is produced due to collisions between
A
neutral gas atoms/molecules
B
positive ions and neutral atoms/molecules
C
negative electrons and neutral atoms/molecules
D
photons and neutral atoms/molecules.
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