NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 265 - 267 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: 265

» Rotational Motion » Angular Momentum

MCQ▾

Question

Two uniforms discs of equal mass but unequal radii are mounted on fixed horizontal exiles. Light strings are wrapped on each of the discs. The strings are pulled by constant equal forces F for same amount of time as shown in the figure.

Disc I and Disc II and force applied to it

Disc I and Disc II and Force Applied to It

We show two uniform discs of equal mass but unequal radii

Angular momenta of discs are L 1 and L 2 and their kinetic energies are K 1 and K 2. Which of the following statements true

(1) L 1 = L 2

(2) L 1 < L 2

(3) K 1 > K 2

(4) K 1 = K 2

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

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 266

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

Two charges q 1 and q 2 are placed 30 cm apart, shown in the figure. A third charge q 3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the electrostatic potential energy of the system is . What will be P?

Diagram 1 - Two charges q1 and q2

Diagram 1 - Two Charges q1 and q2

In figure two charges q1 and q2 are placed 30 cm apart. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D

Choices

Choice (4) Response

a.

8 q 2

b.

8 q 1

c.

6q 2

d.

6 q 1

Question number: 267

» Electrostatics » Electric Charges

MCQ▾

Question

the magnitude of electric field intensity E is such that, when an electron placed in it, electron would experience an electrical force is equal to its weight is given by mg. So, what is the magnitude of this electric field?

Choices

Choice (4) Response

a.

b.

c.

d.

f Page
Sign In