NEET Physics: Questions 1250 - 1253 of 2098

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Question number: 1250

» Wave Optics » Brewster's Law

MCQ▾

Question

A ray of light is incident on the surface of a glass plate at an angle of incidence equal to Brewster’s angle Φ. If μ represents the refractive index of glass with respect to air, then the angle between reflected and refracted rays is,

Choices

Choice (4) Response

a.

900sin1(μcosΦμ)

b.

900

c.

sin1(μcosΦ)

d.

900+Φ

Question number: 1251

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

Assertion-Reason▾

Assertion (Ꭺ)

Photosensitivity of a metal is large if its work function is small.

Reason (Ꭱ)

Work function = hf 0. where f 0 is the threshold frequency.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

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

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question number: 1252

» Thermodynamics » Concept of Temperature

MCQ▾

Question

How much work to be done in decreasing the volume of an ideal gas by an amount of 2.4 × 10 -4 m 3 at normal temperature and constant normal pressure of 1 × 10 -5N/ m 2

Choices

Choice (4) Response

a.

24 Joule

b.

25 Joule

c.

28 Joule

d.

27 Joule

Question number: 1253

» Properties of Solids & Liquids » Temperature

Assertion-Reason▾

Assertion (Ꭺ)

Fahrenheit is the smallest unit measuring temperature.

Reason (Ꭱ)

Fahrenheit was the first temperature scale used for measuring temperature.

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

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