1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is
A
40 $$\Omega $$
B
25 $$\Omega $$
C
250 $$\Omega $$
D
500 $$\Omega $$
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
An EM wave is propagating in a medium with a velocity $$\overrightarrow v = v\widehat i$$. The instantaneous oscillating electric field of this em wave is along +y axis. Then the direction of oscillating magnetic field of the em wave will be along
A
z direction
B
+z direction
C
–y direction
D
–x direction
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The refractive index of the material of a prism is $$\sqrt 2 $$ and the angle of the prism is 30°. One of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is
A
600
B
450
C
300
D
zero
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
An inductor 20 mH, a capacitor 100 $$\mu $$F and a resistor 50 $$\Omega $$ are connected in series across a source of emf, V = 10 sin 314 t. The power loss in the circuit is
A
0.79 W
B
0.43 W
C
2.74 W
D
1.13 W
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Graduate Aptitude Test in Engineering
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