1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

A closely packed coil having 1000 turns has an average radius of 62.8 cm. If current carried by the wire of the coil is 1 A, the value of magnetic field produced at the centre of the coil will be (permeability of free space $$ = 4\pi \times {10^{ - 7}}$$ H/m) nearly

A
10$$-$$3 T
B
10$$-$$1 T
C
10$$-$$2 T
D
102 T
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The magnetic field of a plane electromagnetic wave is given by $$\overrightarrow B = 3 \times {10^{ - 8}}\cos (1.6 \times {10^3}x + 48 \times {10^{10}}t)\widehat j$$, then the associated electric field will be :

A
$$9\cos (1.6 \times {10^3}x + 48 \times {10^{10}}t)\widehat k$$ V/m
B
$$3 \times {10^{ - 8}}\cos (1.6 \times {10^3}x + 48 \times {10^{10}}t)\widehat i$$ V/m
C
$$3 \times {10^{ - 8}}\sin (1.6 \times {10^3}x + 48 \times {10^{10}}t)\widehat i$$ V/m
D
$$9\sin (1.6 \times {10^3}x - 48 \times {10^{10}}t)\widehat k$$ V/m
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The restoring force of a spring with a block attached to the free end of the spring is represented by

A
NEET 2022 Phase 2 Physics - Work, Energy and Power Question 6 English Option 1
B
NEET 2022 Phase 2 Physics - Work, Energy and Power Question 6 English Option 2
C
NEET 2022 Phase 2 Physics - Work, Energy and Power Question 6 English Option 3
D
NEET 2022 Phase 2 Physics - Work, Energy and Power Question 6 English Option 4
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : When a fire cracker (rocket) explodes in mid air, its fragments fly in such a way that they continue moving in the same path, which the fire cracker would have followed, had it not exploded.

Reason (R) : Explosion of cracker (rocket) occurs due to internal force only and no external force acts for this explosion.

In the light of the above statements, choose the most appropriate answer from the option given below

A
(A) is not correct but (R) is correct
B
Both (A) and (R) are correct and (R) is the correct explanation of (A)
C
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
D
(A) is correct but (R) is not correct
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