NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1631 - 1636 of 2142

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Question number: 1631

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

The length of a simple pendulum is increased by 1%. Its time period will

Choices

Choice (4) Response

a.

Increase by 1%

b.

Increase by 2%

c.

Decrease by 0.5%

d.

Increase by 0.5%

Question number: 1632

» Oscillations and Waves » Periodic Motion - Period Frequency

MCQ▾

Question

The time period of a simple pendulum of length 2 L as measured in an elevator descending with acceleration g / 3 is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1633

» Oscillations and Waves » Simple Harmonic Motion » Energy

MCQ▾

Question

The total energy of a particle executing S. H. M. is proportional to

Choices

Choice (4) Response

a.

Displacement from equilibrium position

b.

Frequency of oscillation

c.

Velocity in equilibrium position

d.

Square of amplitude of motion

Question number: 1634

» Oscillations and Waves » Periodic Functions

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

» Oscillations and Waves » Periodic Functions

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:

Data obtained from the linear portion of curve

List of data obtaining from liner portion of curve of static characteristic curve of a triode

Grid voltage V g (Volt)

-2.0

-3.5

-2.0

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

» Electronic Devices » Semiconductor Diode

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

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