AIIMS (All India Institute of Medical Sciences) Physics: Questions 286 - 290 of 500

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Question number: 286

» Electrostatics » Capacitors

MCQ▾

Question

A capacitor in a defibrillator is charged to 2000 V. The energy stored in the capacitor is sent through the patient during a pulse of duration 4 ms. The power delivered to the patient is –

Choices

Choice (4) Response

a.

100 kW

b.

25 kW

c.

50 kW

d.

200 kW

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Question number: 287

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

MCQ▾

Question

A closely wound flat circular coil of 30 turns of wire has diameter of 12 cm and carries a current of 6 ampere. Determine the magnetic flux density at the centre of the coil:

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 288

» Oscillations and Waves » Periodic Motion - Period Frequency

MCQ▾

Question

At a certain instant of time, displacement of a harmonically oscillating body is and acceleration is and amplitude is 0.08 m. So what is the velocity of the oscillator at this instant of time?

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 289

» Dual Nature of Matter and Radiation » Dual Nature of Radiation

Appeared in Year: 2003

Assertion-Reason▾

Question

Assertion (Ꭺ)

A tube light emits white light.

Reason (Ꭱ)

Emission of light in a tube takes place at a very high temperature.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

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

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

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Question number: 290

» Wave Optics » Interference

MCQ▾

Question

The ratio of intensities of two waves is 25: 9. When they superimpose, the ratio of maximum to minimum intensity will become –

Choices

Choice (4) Response

a.

9: 1

b.

16: 1

c.

8: 1

d.

18: 1

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