AIIMS Physics: Questions 244 - 246 of 500

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Question number: 244

» Atoms and Nuclei » Nuclear Fission and Fusion

Appeared in Year: 2004

Assertion-Reason▾

Assertion (Ꭺ)

Heavy water is preferred over ordinary water as a moderator in reactors.

Reason (Ꭱ)

Heavy water used for slowing down the neutrons; has lesser absorption probability of neutrons than ordinary water.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

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

Question number: 245

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

Assertion-Reason▾

Assertion (Ꭺ)

Smaller drops of liquid resist deforming forces better than the larger drops.

Reason (Ꭱ)

Excess pressure inside a drop is directly proportional to its surface area.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

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

Question number: 246

» Properties of Solids & Liquids » Streamline and Turbulent Flow

Appeared in Year: 1994

Assertion-Reason▾

Assertion (Ꭺ)

The shape of an automobile is so designed that its front resembles the stream line pattern of the fluid through which it moves.

Reason (Ꭱ)

The shape of the automobile is made stream lined in order to reduce resistance offered by the fluid.

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.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are false

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