Experimental Skills (NEET Physics): Questions 55 - 59 of 66

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Question number: 55

» Experimental Skills » Potentiometer

MCQ▾

Question

Potential gradient of a potentiometer is equal to

Choices

Choice (4) Response

a.

resistance per unit length

b.

emf per unit length

c.

potential drop per unit length

d.

current per unit length

Question number: 56

» Experimental Skills » Zener Diode

MCQ▾

Question

A Zener diode operates on which of the following bias?

Choices

Choice (4) Response

a.

forward and reverse bias.

b.

No biasing is required for it.

c.

Reverse bias

d.

Forward bias

Question number: 57

» Experimental Skills » Meter Bridge

MCQ▾

Question

If the wire in the experiment to determine the resistivity of a material using meter bridge is replaced by copper or hollow wire the balance point i. e. null point shifts to

Choices

Choice (4) Response

a.

left

b.

right

c.

at same point

d.

All of the above

Question number: 58

» Experimental Skills » Meter Bridge

MCQ▾

Question

In an experiment to determine an unknown resistance, a 100 cm long resistance wire is used. The unknown resistance is kept in the left gap and a known resistance is put into the right gap. The scale used to measure length has a least count 1 mm. The null point B is obtained at 40.0 cm from the left gap. Determine the percentage error in the computation of unknown resistance.

Choices

Choice (4) Response

a.

0.42%

b.

0.50%

c.

0.24%

d.

0.28%

Question number: 59

» Experimental Skills » Transistor

MCQ▾

Question

Current gain is maximum in which of the following configuration of a transistor?

Choices

Choice (4) Response

a.

Common base configuration

b.

Common collector configuration

c.

Common emitter configuration

d.

Equal in both common emitter and common base configuration

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