NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 431 - 434 of 2320

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Question number: 431

» Electrostatics » Forces between Two Point Charges

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MCQ▾

Question

A charged ball B hangs from a silk thread S, which makes an angle θ with a large charged conducting sheet P, as shown in the figure. The surface charge density a of the sheet is proportional to

A charged ball system

A Charged Ball System

Choices

Choice (4)Response

a.

Cos θ

b.

Cot θ

c.

Tan θ

d.

Sin θ

Question number: 432

» Electrostatics » Electrostatic Potential Energy

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MCQ▾

Question

Three charges Q , +q and +q are placed at the vertices of right-angled isosceles triangle as shown in the figure. The net electrostatic energy of the configuration is zero if Q is equal to

Right-angled isosceles triangle with 3 charges

Right-Angled Isosceles Triangle with 3 Charges

Choices

Choice (4)Response

a.

b.

c.

d.

2q

Question number: 433

» Electrostatics » Capacitors

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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.

1,2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

Question number: 434

» Electrostatics » Capacitors

Edit
Assertion-Reason▾

Question

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.

Ꭺ is true but Ꭱ is false

b.

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

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

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