AIIMS Physics: Questions 19 - 23 of 500

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Question number: 19

» Rotational Motion » Concepts of Rotational Motion

Appeared in Year: 2005

MCQ▾

Question

A horizontal platform is rotating with uniform angular velocity around the vertical axis passing through its center. At some instant of time a viscous fluid of mass “m” is dropped at the center and is allowed to spread out and finally fall on ground. The angular velocity during this period: - [AIIMS]

Choices

Choice (4) Response

a.

Decreases initially and increases again

b.

Decreases continuously

c.

Remains unaltered

d.

Increases continuously

Question number: 20

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

Appeared in Year: 2004

MCQ▾

Question

Two parallel beams of positrons moving in the same direction will – [AIIMS]

Choices

Choice (4) Response

a.

Will not interact with each other

b.

Attracts to each other

c.

Be deflected normal to the plane containing the two beams

d.

Repel to each other

Question number: 21

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Appeared in Year: 2001

MCQ▾

Question

The coil of choke in a circuit: [AIIMS]

Choices

Choice (4) Response

a.

Increases the current

b.

Does not change the current

c.

Decrease the current

d.

Has high resistance to d c circuit

Question number: 22

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

Appeared in Year: 2000

MCQ▾

Question

If the rotational velocity of a dynamo armature is doubled, then induced emf will become – [AIIMS]

Choices

Choice (4) Response

a.

Half

b.

Four times

c.

Unchanged

d.

Two times

Question number: 23

» Laws of Motion » Laws of Friction

Appeared in Year: 2006

MCQ▾

Question

A person used force (F), shown in figure to move a load with constant velocity on given surface.

Plot of force verses position

Plot of Force Verses Position

A person used force (F) which is shown in figure, to move a load with constant velocity on given surface

Identify the correct surface profile: -. [AIIMS]

Choices

Choice (4) Response

a.

Surface Profile Choice-A

Surface Profile Choice-A

In figure a surface profile is shown on which a person moves the load.

b.

Surface Profile Choice -B

Surface Profile Choice -B

In figure a surface profile is shown on which a person moves the load.

c.

Surface Profile Choice-C

Surface Profile Choice-C

In figure a surface profile is shown on which a person moves the load.

d.

Surface Profile Choice -D

Surface Profile Choice -D

In figure a surface profile is shown on which a person moves the load

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