NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 408 - 411 of 2142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 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: 408

» Electrostatics » Electric Field Due to a Point Charge

Assertion-Reason▾

Assertion (Ꭺ)

A point charge is brought in an electric field. The field at a nearby point will increase, whatever be the nature of the charge.

Reason (Ꭱ)

The electric field is dependent on the nature of charge.

Choices

Choice (4) Response

a.

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

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.

Ꭺ is false but Ꭱ is true

Question number: 409

» Laws of Motion » Force and Inertia

MCQ▾

Question

A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/tc revolutions per second around the vertical axis through the fixed end as Shown in the figure, then tension in the string is

String motion of length L carrying mass M

String Motion of Length L Carrying Mass M

A string of length L is fixed at one end and carries a mass M at the other end

Choices

Choice (4) Response

a.

4 ML

b.

5ML

c.

2 ML

d.

16 ML

Question number: 410

» Rotational Motion » Torque

MCQ▾

Question

A horizontal force F is applied such that the block remains stationary, then which of the following statement is false

Stationary block with horizontal force F

Stationary Block With Horizontal Force F

In above figure we shows that force F is applied as the block is stationary.

Choices

Choice (4) Response

a.

F = N [where N is the normal reaction]

b.

F will not produce torque

c.

N will not produce torque

d.

f = mg [where f is the friction force]

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

f Page
Sign In