1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction $${1 \over \pi }\left( {{{Wb} \over {{m^2}}}} \right)$$ in such a way that its axis makes an angle of 60o with $$\overrightarrow B .$$ The magnetic flux linked with the disc is
A
0.08 Wb
B
0.01 Wb
C
0.02 Wb
D
0.06 Wb
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
AIPMT 2008 Physics - Current Electricity Question 80 English
In the circuit shown, the current through the 4 $$\Omega $$ resistor is 1 amp when the points P and M are connected to a d.c. voltage source. The potential difference betwen the points M and N is
A
0.5 volt
B
3.2 volt
C
1.5 volt
D
1.0 volt
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10 cm. The diameter of the sun is 1.39 $$ \times $$ 109 m and its mean distance from the earth is 1.5 $$ \times $$ 1011 m. What is the diameter of the sun's image on the paper ?
A
6.5 $$ \times $$10$$-$$5 m
B
12.4 $$ \times $$10$$-$$4 m
C
9.2 $$ \times $$10$$-$$4 m
D
6.5 $$ \times $$10$$-$$4 m
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
The work function of a surface of a photosensitive material is 6.2 eV. The wavelength of the incident radiation for which the stopping potential is 5 V lies in the
A
infrared region
B
X-ray region
C
Ultraviolet region
D
Visible region