NEET Physics: Questions 432 - 434 of 2098

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Question number: 432

» Electrostatics » Capacitors

MCQ▾

Question

The capacitance of a parallel plate condenser depends on

(1) Area of the plates

(2) Medium between the plates

(3) Distance between the plates

(4) Metal of the plates

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 3 are correct

d.

1 and 2 are correct

Question number: 433

» Electrostatics » Capacitors

Assertion-Reason▾

Assertion (Ꭺ)

The force with which one plate of a parallel plate capacitor is attracted towards the other plate is equal to square of surface density per 2 0 per unit area.

Reason (Ꭱ)

The electric field due to one charged plate of the capacitor at the location of the other is equal to surface density per 2 0.

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 false

c.

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

d.

Ꭺ is true but Ꭱ is false

Question number: 434

» Rotational Motion » Angular Momentum

MCQ▾

Question

A round disc of moment of inertia I 2 about its axis perpendicular to its plane and passing through its center is placed over another disc of moment of inertia I1 rotating with an angular velocity co about the same axis. The final angular velocity of the combination of discs is

Choices

Choice (4) Response

a.

(I1+I2)ωI1

b.

ω

c.

I1ω(I1+I2)

d.

I2ω(I1+I2)

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