1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

When light propagates through a material medium of relative permittivity $$\varepsilon $$r and relative permeability $$\mu$$r, the velocity of light, v is given by (c-velocity of light in vacuum)

A
v = c
B
$$v = \sqrt {{{{\mu _r}} \over {{\varepsilon _r}}}} $$
C
$$v = \sqrt {{{{\varepsilon _r}} \over {{\mu _r}}}} $$
D
$$v = {c \over {\sqrt {{\varepsilon _r}{\mu _r}} }}$$
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Two hollow conducting spheres of radii R1 and R2 (R1 >> R2) have equal charges. The potential would be

A
More on bigger sphere
B
More on smaller sphere
C
Equal on both the spheres
D
Dependent on the material property of the sphere
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

A copper wire of length 10 m and radius $$\left( {{{{{10}^{ - 2}}} \over {\sqrt \pi }}} \right)$$ m has electrical resistance of 10 $$\Omega$$. The current density in the wire for an electric field strength of 10 (V/m) is

A
104 A/m2
B
106 A/m2
C
10$$-$$5 A/m2
D
105 A/m2
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

The displacement-time graphs of two moving particles make angles of 30$$^\circ$$ and 45$$^\circ$$ with the x-axis as shown in the figure. The ratio of their respective velocity is

NEET 2022 Phase 1 Physics - Motion in a Straight Line Question 7 English

A
$$\sqrt3$$ : 1
B
1 : 1
C
1 : 2
D
1 : $$\sqrt3$$
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