1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
An alpha nucleus of energy $${1 \over 2}m{v^2}$$ bombards a heavy nuclear target of charge $$Ze$$. Then the distance of closest approach for the alpha nucleus will be proportional to
A
$${v^2}$$
B
$${1 \over m}$$
C
$${1 \over {{v^2}}}$$
D
$${1 \over {Ze}}$$
2
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
If the ratio of the concentration of electrons to that of holes in a semiconductor is $${7 \over 5}$$ and the ratio of currents is $${7 \over 4},$$ then what is the ratio of their drift velocities?
A
$${5 \over 8}$$
B
$${4 \over 5}$$
C
$${5 \over 4}$$
D
$${4 \over 7}$$
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
A solid which is not transparent to visible light and whose conductivity increases with temperature is formed by
A
Ionic bonding
B
Covalent bonding
C
Vander Waals bonding
D
Metallic bonding
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
When $${}_3L{i^7}$$ nuclei are bombarded by protons, and the resultant nuclei are $${}_4B{e^8}$$, the emitted particles will be
A
alpha particles
B
beta particles
C
gamma photons
D
neutrons
JEE Main Papers
2023
2021
EXAM MAP