AIIMS Physics: Questions 247 - 250 of 500

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Question number: 247

» Current Electricity » Electric Cell and Its Internal Resistance

Appeared in Year: 2004

Assertion-Reason▾

Assertion (Ꭺ)

A larger dry cell has higher emf.

Reason (Ꭱ)

The emf of a dry cell is proportional to its size.

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. Ꭺ is false but Ꭱ is true
d. Ꭺ is true but Ꭱ is false

Question number: 248

» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

The resolving power of a telescope is more if the diameter of the objective lens is more.

Reason (Ꭱ)

Objective lens of large diameter collects more light.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are false
b. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
c. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
d. Ꭺ is true but Ꭱ is false

Question number: 249

» X - Rays » Bragg's Law

Appeared in Year: 2004

Assertion-Reason▾

Assertion (Ꭺ)

Crystalline solids can cause X-rays to diffract.

Reason (Ꭱ)

Interatomic distance in crystalline solids is of the order of 0.1 nm.

Choices

Choice (4) Response
a. Ꭺ is false but Ꭱ is true
b. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
c. Ꭺ is true but Ꭱ is false
d. Both Ꭺ and Ꭱ are false

Question number: 250

» Properties of Solids & Liquids » Pressure Due to a Fluid Column

MCQ▾

Question

The pressure required to reduce the volume of a rubber ball by 0.5% is –

(BulkmodulusB=9.1×108Nm2) .

Choices

Choice (4) Response
a.

1.8×103Nm2

b.

9.1×105Nm2

c.

45.5×105Nm2

d.

36×103Nm2

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