1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The time taken by a photoelectron to come out after the photon strikes is approximately
A
$${10^{ - 4}}\,s$$
B
$${10^{ - 10}}\,s$$
C
$${10^{ - 16}}\,s$$
D
$${10^{ - 1}}\,s$$
2
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The anode voltage of a photocell is kept fixed. The wavelength $$\lambda $$ of the light falling on the cathode is gradually changed. The plate current $${\rm I}$$ of the photocell varies as follows
A
AIEEE 2006 Physics - Dual Nature of Radiation Question 144 English Option 1
B
AIEEE 2006 Physics - Dual Nature of Radiation Question 144 English Option 2
C
AIEEE 2006 Physics - Dual Nature of Radiation Question 144 English Option 3
D
AIEEE 2006 Physics - Dual Nature of Radiation Question 144 English Option 4
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
If the kinetic energy of a free electron doubles, it's deBroglie wavelength changes by the factor
A
$$2$$
B
$${1 \over 2}$$
C
$${\sqrt 2 }$$
D
$${1 \over {\sqrt 2 }}$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A photocell is illuminated by a small bright source placed $$1$$ $$m$$ away. When the same source of light is placed $${1 \over 2}$$ $$m$$ away, the number of electrons emitted by photo-cathode would
A
increases by a factor of $$4$$
B
decreases by a factor of $$4$$
C
increases by a factor of $$2$$
D
decreases by a factor of $$2$$
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12