AIIMS Physics: Questions 196 - 200 of 500

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Question number: 196

» Electronic Devices » Junction Transistor

Appeared in Year: 2003

MCQ▾

Question

In the following common emitter configuration an ‘NPN’ transistor with current gain Equation is used the output voltage of amplifier will be –

Choices

Choice (4) Response

a.

0.1V

b.

10V

c.

10 mV

d.

1.0 V

Question number: 197

» Electronic Devices » Semiconductors

Appeared in Year: 2005

MCQ▾

Question

In semiconducting material the mobility of electrons and holes are Equation and Equation respectively. Which of the following is true?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 198

» Work, Energy and Power » Work-Energy Theorem

Appeared in Year: 2003

MCQ▾

Question

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 kV, its kinetic energy will be –

Choices

Choice (4) Response

a.

Equation

b.

1 KeV

c.

Equation

d.

Equation

Question number: 199

» Atoms and Nuclei » Half Life and Mean Life

Appeared in Year: 2003

MCQ▾

Question

A radioactive substance decays to Equation of its initial activity in 40 days. The half-life of the radioactive substance expressed in days is –

Choices

Choice (4) Response

a.

5

b.

10

c.

20

d.

2.5

Question number: 200

» Kinematics » Scalars and Vectors » Scalar and Vector Products

Appeared in Year: 2009

Assertion-Reason▾

Assertion (Ꭺ)

Assertion: Vector Equation is perpendicular to Equation

Reason (Ꭱ)

Two non-zero vectors are perpendicular if their dot product is equal to zero.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

Both Ꭺ and Ꭱ are false

d.

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

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