1
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

A tightly wound 100 turns coil of radius $$10 \mathrm{~cm}$$ carries a current of $$7 \mathrm{~A}$$. The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as $$4 \pi \times 10^{-7} \mathrm{SI}$$ units):

A
44 mT
B
4.4 T
C
4.4 mT
D
44 T
2
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

In an ideal transformer, the turns ratio is $$\frac{N_P}{N_S}=\frac{1}{2}$$. The ratio $$V_S: V_P$$ is equal to (the symbols carry their usual meaning) :

A
$$1: 2$$
B
$$2: 1$$
C
$$1: 1$$
D
$$1: 4$$
3
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

The graph which shows the variation of $$\left(\frac{1}{\lambda^2}\right)$$ and its kinetic energy, $$E$$ is (where $$\lambda$$ is de Broglie wavelength of a free particle):

A
NEET 2024 Physics - Dual Nature of Radiation and Matter Question 3 English Option 1
B
NEET 2024 Physics - Dual Nature of Radiation and Matter Question 3 English Option 2
C
NEET 2024 Physics - Dual Nature of Radiation and Matter Question 3 English Option 3
D
NEET 2024 Physics - Dual Nature of Radiation and Matter Question 3 English Option 4
4
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements:

Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.

Statement II: Atoms of each element are stable and emit their characteristic spectrum.

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

A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct but Statement II is incorrect
D
Statement I is incorrect but Statement II is correct
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