1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A linear aperture whose width is 0.02 cm is placed immediately in front of a lens of focal length 60 cm. The aparture is illuminated normally by a parallel beam of wavelength 5 $$ \times $$ 10$$-$$5 cm. The distance of the first dark band of the diffraction pattern from the centre of the screen is
A
0.10 cm
B
0.25 cm
C
0.20 cm
D
0.15 cm
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
Two identical glass ($$\mu $$g = 3/2) equiconvex lenses of focal length $$f$$ each are kept in contact. The space between the two lenses is filled with water $$\left( {{\mu _w} = 4/3} \right)$$. The focal length of the combination is
A
$$f/3$$
B
$$f$$
C
$$4f/3$$
D
$$3f/4$$
3
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A person can see clearly objects only when they lie between 50 cm and 400 cm from his eyes . In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use. will be
A
convex, + 2.25 diopter
B
concave, $$-$$0.25 diopter
C
concave, $$-$$0.2 diopter
D
convex, + 0.15 diopter
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A 100 $$\Omega $$ resistance and a capacitor of 100 $$\Omega $$ reactance are connected in series across a 220 V source. When the capacitor is 50% charged, the peak value of the displacement current is
A
2.2 A
B
11 A
C
4.4 A
D
11$$\sqrt 2 A$$