Electricity
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Semiconductor Electronics
MCQ (Single Correct Answer)
1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
If $$\lambda $$m denotes the wavelength at which the radioactive amission from a black body at a temperature TK is maximum, then
A
$${\lambda _m}\, \propto \,{T^4}$$
B
$${\lambda _m}$$ is independent of T
C
$${\lambda _m}$$ $$ \propto $$ T
D
$${\lambda _m}\, \propto \,{T^{ - 1}}$$
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Consider a compound slab consisting of two different materials having equal thicknesses and thermal conductivities K and 2K, respectively. The equivalent thermal conductivity of the slab is
A
$${2 \over 3}K$$
B
$$\sqrt 2 K$$
C
3 K
D
$${4 \over 3}K$$
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
The Wien's displacement law express relation between
A
wavelength corresponding to maximum energy and temperature
B
radiation energy and wavelength
C
temperature and wavelength
D
colour of light and temperature.
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Which of the following is best close to an ideal black body?
A
black lamp
B
cavity maintained at constant temperature
C
platinium black
D
a lump of charcoal heated to high temperature.
NEET Subjects