NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1069 - 1073 of 2184

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Question number: 1069

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

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Assertion-Reason▾

Question

Assertion (Ꭺ)

When capacitive reactance is smaller than the inductive reactance in LCR current, e. m. f. leads the current.

Reason (Ꭱ)

The phase angle is the angle between the alternating e. m. f. and alternating current of the circuit.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

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

Question number: 1070

» Ray Optics » Deviation and Dispersion of Light by a Prism

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

A rainbow cannot be seen at noon, when the sun is high in the sky.

Reason (Ꭱ)

A rainbow is formed by dispersion of light.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

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

Question number: 1071

» Ray Optics » Deviation and Dispersion of Light by a Prism

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MCQ▾

Question

Calculate the dispersive power for crown glass from the (given data: )

Choices

Choice (4) Response

a.

0.0112

b.

0.0142

c.

0.0183

d.

0.0163

Question number: 1072

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

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MCQ▾

Question

A wave is propagating in a medium of dielectric constant 2 and relative magnetic permeability 50. The wave impedance of such a medium is

Choices

Choice (4) Response

a.

376.6Ω

b.

3776 Ω

c.

d.

1883 Ω

Question number: 1073

» Ray Optics » Total Internal Reflection

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MCQ▾

Question

Mirages are observed in deserts due to,

Choices

Choice (4) Response

a.

Total internal reflection of light

b.

Dispersion of light

c.

Double refraction of light

d.

Interference of light