NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 303 - 307 of 2184

Access detailed explanations (illustrated with images and videos) to 2184 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 550.00 or

How to register?

Question number: 303

» Rotational Motion » Torque

Edit
MCQ▾

Question

Find the torque of a force F =-2 i + j+3 k acting at the point r = 5 i + 3 j + 2k

Choices

Choice (4) Response

a.

14i - 38j + 16k

b.

7i - 19j + 19k

c.

-l4i + 38j -16k

d.

-21i + 3j + 5k

Question number: 304

» Rotational Motion » Angular Momentum

Edit
MCQ▾

Question

The wheel of a car is rotating at the rate of 1200 revolutions per minute. On pressing the accelerator for 10 seconds, it starts rotating at 3500 revolutions per minute. The angular acceleration of the wheel is

Choices

Choice (4) Response

a.

1980 degree/sec 2

b.

1880 degree/sec 2

c.

30 rad/sec 2

d.

1500 rad/sec 2

Passage

An electric dipole (AB) consisting of two particles of equal and opposite charge and same mass is released in an electric field. In the figure field lines are without considering effect of field of dipole.

Dipole in electric field

Dipole in Electric Field

An electric dipole (AB) consisting of two particles of equal and opposite charge and same mass is released in an electric field

Question number: 305 (1 of 2 Based on Passage) Show Passage

» Electrostatics » Electric Dipole

Edit
MCQ▾

Question

The center of mass of the dipole

Choices

Choice (4) Response

a.

Has acceleration with positive x component and negative y component

b.

Has no acceleration

c.

Has acceleration with negative x component and positive y component

d.

Has acceleration with positive x and y components

Question number: 306 (2 of 2 Based on Passage) Show Passage

» Electrostatics » Electric Dipole

Edit
MCQ▾

Question

Angular acceleration of the dipole, immediately after it is released

Choices

Choice (4) Response

a.

is anticlockwise

b.

Cannot be determined from the given information.

c.

is clockwise

d.

is zero

Question number: 307

» Laws of Motion » Momentum

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

The slope of momentum versus time graph! give us the acceleration.

Reason (Ꭱ)

Force is given by the rate of change on momentum.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false