NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1634 - 1639 of 2142

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Question number: 1634

MCQ▾

Question

A particle executes a simple harmonic motion of time period T. Find the time taken by the particle to go directly from its mean position to the amplitude

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1635

Assertion-Reason▾

Assertion (Ꭺ)

In S. H. M. , the motion is ‘to and fro’ and periodic.

Reason (Ꭱ)

Velocity of the particle (where x is the displacement and k is amplitude)

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 true but Ꭱ is NOT the correct explanation of Ꭺ

Passage

A student performs an experiment for drawing the static characteristic curve of a triode valve in the laboratory. The following data were obtained from the linear portion of the curves:

 Grid voltage V g (Volt) -2 -3.5 -2 Plate voltage V p (Volt) 180 180 120 Plate current I P (mA) 15 7 10

Question number: 1636 (1 of 3 Based on Passage) Show Passage

MCQ▾

Question

Calculate the amplification factor μ of the triode valve?

Choices

Choice (4) Response

a.

62

b.

54

c.

52

d.

64

Question number: 1637 (2 of 3 Based on Passage) Show Passage

MCQ▾

Question

Calculate the mutual conductance (g m) of the triode valve?

Choices

Choice (4) Response

a.

5.00 × 10 -3 ohm -1

b.

5.33 × 10 -3 ohm -1

c.

4.32 × 10 -3 ohm -1

d.

53.3 × 10 -3 ohm -1

Question number: 1638 (3 of 3 Based on Passage) Show Passage

MCQ▾

Question

Calculate the plate resistance r p of the triode valve?

Choices

Choice (4) Response

a.

0.12 × 10 4 ohm

b.

1.2 × 10 4 ohm

c.

1.3 × 10 4 ohm

d.

1.4 × 10 4 ohm

Question number: 1639

MCQ▾

Question

If a simple pendulum oscillates with amplitude of 30 mm and time period of 5 sec, then its maximum velocity is

Choices

Choice (4) Response

a.

b.

c.

d.

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