Magnetic Effects of Current and Magnetism [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 118 - 121 of 246

Choose Programs:

📹 Video Course 2024 (8 Lectures [3 hrs : 4 mins]): Offline Support

Rs. 100.00 -OR-

1 Month Validity (Multiple Devices)

Preview All LecturesDetails

⏳ 🎯 Online Tests (5 Tests [50 questions each]): NTA Pattern, Analytics & Explanations

Rs. 500.00 -OR-

3 Year Validity (Multiple Devices)

Sample TestsDetailsSee Demo

🎓 Study Material (575 Notes): 2024-2025 Syllabus

Rs. 650.00 -OR-

3 Year Validity (Multiple Devices)

Topic-wise Notes & SampleDetails

🎯 5119 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 750.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 118

Question MCQ▾

When a piece of a ferromagnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is

Choices

Choice (4)Response

a.

2

b.

1

c.

4

d.

3

Edit

Question 119

Question MCQ▾

A proton, a deuteron and an α-particle are accelerated through same potential difference and then they enter a normal uniform magnetic field. The ratio of their kinetic energies will be-

Choices

Choice (4)Response

a.

1: 2: 4

b.

1: 1: 2

c.

1: 1: 1

d.

2: 1: 3

Edit

Question 120

Question Assertion-Reason▾

Assertion(Ꭺ)

A paramagnetic sample displays greater magnetization (for the same magnetizing field) when cooled.

Reason(Ꭱ)

The magnetization does not depend on temperature.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Edit

Question 121

Question MCQ▾

A long straight horizontal cable carries a current of 2.5 A in the direction 10° south of west to 10° north of east. The magnetic meridian of the place happens to be 10° west of the geographic meridian. The earth՚s magnetic field at the location is 0.33 Gauss, and the angle of dip is zero. Distance of the line of neutral points from the cable is, (Ignore the thickness of the cable) .

Choices

Choice (4)Response

a.

2.0 cm

b.

2.5 cm

c.

3.5 cm

d.

1.5 cm

Edit