NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 556 - 559 of 5119

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Question 556

Question MCQ▾

A bicycle wheel of radius 0.5 m has 32 spokes. It is rotating at the rate of 120 revolutions per minute, perpendicular to the horizontal component of earth՚s magnetic field BH = 4 × 10-5 tesla. The emf induced between the rim and the center of the wheel will be,

Choices

Choice (4)Response

a.

6.28 × 10-5 V

b.

1.6 × 10-5 V

c.

4.8 × 10-5 V

d.

6.0 × 10-5 V

Edit

Question 557

Question MCQ▾

The sensitivity of a moving coil galvanometer can be increased by

(1) Decreasing the couple per unit twist of the suspension

(2) Increasing the number of turns in the coil

(3) Decreasing the area of the coil

(4) Decreasing the magnetic field

Select the correct answers and mark it according to the following codes:

Choices

Choice (4)Response

a.

2 and 4 are correct

b.

1,2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Edit

Question 558

Question MCQ▾

What is the net force on the square coil?

Current Carrying Square Coil ABCD

Choices

Choice (4)Response

a.

25 × 10-7 N towards wire

b.

35 × 10-7 N away from wire

c.

35 × 10-7 N towards wire

d.

25 × 10-7 N away from wire

Edit

Question 559

Question MCQ▾

A diamagnetic material in a magnetic field moves

Choices

Choice (4)Response

a.

From stronger to the weaker parts of the field

b.

From weaker to the stronger parts of the field

c.

None

d.

Perpendicular to the field

Edit