1
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Change Language
If the momentum of an electron is changed by P, then the de Broglie wavelength associated with changes by 0.5%. The initial momentum of electron will be
A
200 P
B
400 P
C
$${P \over {200}}$$
D
100 P
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Change Language
A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its enf closer to the pole is 20 cm away from the mirror. The length of the image is
A
10 cm
B
15 cm
C
2.5 cm
D
5 cm
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Change Language
For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index.
A
lies between $$\sqrt 2 $$ and 1
B
lies between 2 and $$\sqrt 2 $$
C
is less than 1
D
is greater than 2
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Change Language
The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagatting in vacuum is equal to
A
the speed of light in vacuum
B
reciprocal of speed of light in vacuum
C
the ratio of magnetic permeability to the electric susceptibility of vacuum
D
unity
EXAM MAP