1
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
2
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 9 English

A
$$\sqrt3$$ : 1
B
1 : 1
C
1 : 2
D
1 : $$\sqrt3$$
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Plane angle and solid angle have

A
Units but no dimensions
B
Dimensions but no units
C
No units and no dimensions
D
Both units and dimensions
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Let T1 and T2 be the energy of an electron in the first and second excited states of hydrogen atoms, respectively. According to the Bohr's model of an atom, the ratio T1 : T2 is

A
1 : 4
B
4 : 1
C
4 : 9
D
9 : 4
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