1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
An experiment is performed to find the refractive index of glass using a travelling microscope. In this experiment distances are measured by
A
a vernier scale provided on the microscope
B
a standard laboratory scale
C
a meter scale provided on the microscope
D
a screw gauge provided on the microscope
2
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross-sectional area $$A=$$ $$10\,\,c{m^2}$$ and length $$=20$$ $$cm$$ . If one of the solenoid has $$300$$ turns and the other $$400$$ turns, their mutual inductance is
$$\left( {{\mu _0} = 4\pi \times {{10}^{ - 7}}\,Tm\,{A^{ - 1}}} \right)$$
A
$$2.4\pi \times {10^{ - 5}}H$$
B
$$4.8\pi \times {10^{ - 4}}H$$
C
$$4.8\pi \times {10^{ - 5}}H$$
D
$$2.4\pi \times {10^{ - 4}}H$$
3
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
A horizontal overhead powerline is at height of $$4m$$ from the ground and carries a current of $$100A$$ from east to west. The magnetic field directly below it on the ground is
$$\left( {{\mu _0} = 4\pi \times {{10}^{ - 7}}\,\,Tm\,\,{A^{ - 1}}} \right)$$
A
$$2.5 \times {10^{ - 7}}\,T$$ southward
B
$$5 \times {10^{ - 6}}\,T$$ northward
C
$$5 \times {10^{ - 6}}\,T$$ southward
D
$$2.5 \times {10^{ - 7}}\,T$$ northward
4
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Relative permittivity and permeability of a material $${\varepsilon _r}$$ and $${\mu _r},$$ respectively. Which of the following values of these quantities are allowed for a diamagnetic material?
A
$${\varepsilon _r} = 0.5,\,\,{\mu _r} = 1.5$$
B
$${\varepsilon _r} = 1.5,\,\,{\mu _r} = 0.5$$
C
$${\varepsilon _r} = 0.5,\,\,{\mu _r} = 0.5$$
D
$${\varepsilon _r} = 1.5,\,\,{\mu _r} = 1.5$$
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