NEET Physics: Questions 411 - 413 of 2098

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 411

» Laws of Motion » Force and Inertia

MCQ▾

Question

A stone of mass 1 kg tied to a light inextensible string of length L = 40/3 m is whirling in a circular path of radius L in a vertical plane. If the ratio of the maximum tension in the string to the minimum tension in the suing is 4 and if g is taken to be 10m/sec 2, the speed of the stone at the highest point of the circle is

Choices

Choice (4) Response

a.

20 m/sec

b.

5√2m/sec

c.

10√3m/Sec

d.

10 m/sec

Question number: 412

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

Consider two children riding on the merry-go-round Child 1 sits near the edge, Child 2 sits closer to the center. Let V1 and v2 denote the linear speed of child 1 and

Child 2, respectively. Which of the following is/are wrong?

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

(1) We cannot determine V 1 & V 2 without more information

(2) v 1 = v 2

(3) v 1 < v 2

(4) v 1 > v 2

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

Question number: 413

» Electrostatics » Electric Potential

Assertion-Reason▾

Assertion (Ꭺ)

A bird perches on a high power line and nothing happens to the bird.

Reason (Ꭱ)

The level of bird is very high from the ground.

Choices

Choice (4) Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

Sign In