Physics-Magnetism & Electricity at Work (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 41 - 45 of 47

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Question number: 41

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

A wire of resistance R is elongated n-fold to make a new uniform wire. The resistance of new wire

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 42

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Tendency of an atom in a molecule to attract the shared pair of electron towards itself is known as

Choices

Choice (4) Response

a.

Valency

b.

Electron-affinity (EA)

c.

Ionisation energy (i.e.)

d.

Electronegativity (EN)

Question number: 43

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Consider the following facts regarding electrons and identify the incorrect statements.

Choices

Choice (4) Response

a.

Electron was named by stoney

b.

Relative charge of an electron is Equation

c.

Mass of an electron is Equation Equation

d.

Charge of an electron is Equation Equation

Question number: 44

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

If a Equation length is increased due to stretching, then the percentage increase in its resistance will be

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 45

» Physics » Magnetism & Electricity at Work

Assertion-Reason▾

Assertion (Ꭺ)

Equation is Ohm’s law

Reason (Ꭱ)

Equation graph is always a straight line passing through origin

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

Ꭺ is true but Ꭱ is false

d.

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

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