AIIMS (All India Institute of Medical Sciences) Physics: Questions 317 - 320 of 500

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Question number: 317

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

Appeared in Year: 2005

MCQ▾

Question

A 50 Hz a. c. source of 50 volts is connected across R and C as shown in figure below. The voltage across R is 20 volts. The voltage across C is –

The series circuit diagram of resistance and capacitor

The Series Circuit Diagram of Resistance and Capacitor

In figure resistance R and capacitor C is connected in series, with 50 Hz a. c. source of 50 volts supply.

Choices

Choice (4) Response

a.

46 V

b.

90 V

c.

25 V

d.

9 V

Question number: 318

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

Question

A coil of copper having 1600 turns is placed in a magnetic field Equation perpendicular to its plane. The cross sectional area of the coil is 0.07 m2. If it turns through 180° in 0.04 sec, then the induced emf in the coil is –

Choices

Choice (4) Response

a.

22.4 V

b.

2.24 V

c.

0.224 V

d.

224 V

Question number: 319

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

An organ pipe closed at one end has fundamental frequency of 1000 Hz. The maximum number of overtones generated by this pipe which a normal person can hear is –

Choices

Choice (4) Response

a.

10

b.

8

c.

9

d.

5

Question number: 320

» Thermodynamics » Concept of Temperature

MCQ▾

Question

As in figure below shows plates of same size but of two different materials A and B are connected end to end in thermal contact. The open end of A is kept at Equation and open end of B is kept at Equation . The ratio of thermal conductivity of A and B is given asEquation .

Two plates of different materials at different temperature

Two Plates of Different Materials at Different Temperature

In figure two plates of same size but of two different materials A and B are connected end to end in thermal contact. The open end of A is kept at 5C and open end of B is kept at 120 C.

The steady – state temperature of the interface is -

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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