1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A photo-cell is illuminated by a source of light, which is placed at a distance d from the cell. If the distance become d/2, then number of electrons emitted per second, will be
A
remain same
B
four times
C
two times
D
one-fourth
2
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
By photoelectric effect, Einstein proved
A
E = h$$\upsilon $$
B
K.E. = $${1 \over 2}$$ mv2
C
E = mc2
D
E = $${{ - Rh{c^2}} \over {{n^2}}}$$
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Who evaluated the mass of electron infirectly with help of charge
A
Thomson
B
Millikan
C
Rutherford
D
Newton
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