NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1280 - 1284 of 2184

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Question number: 1280

» Wave Optics » Young's Double Slit Experiment

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MCQ▾

Question

In Young’s double slit experiment 10th order maximum is obtained at the point of observation in the interference pattern for λ = 7000 Å. If the source is replaced by another one of wavelength 5000 Å then the order of maximum at the same point will be-

Choices

Choice (4) Response

a.

16th

b.

14th

c.

12th

d.

18th

Question number: 1281

» Properties of Solids & Liquids » Thermal Expansion

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MCQ▾

Question

Density of a substance at 0°C is 10 gm/cc and at 100°C, its density is 9.7 gm/cc. The coefficient of linear expansion of the substance will be

Choices

Choice (4) Response

a.

10 2

b.

10 -2

c.

10 -4

d.

10 -3

Question number: 1282

» Properties of Solids & Liquids » Thermal Expansion

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MCQ▾

Question

A constant volume gas thermometer shows pressure reading of 40 cm and 90 cm of mercury at 0°C and 100°C respectively. When the pressure reading is 80 cm of mercury, the temperature is

Choices

Choice (4) Response

a.

15°C

b.

12.5°C

c.

80°C

d.

40°C

Question number: 1283

» Thermodynamics » Thermal Equilibrium

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MCQ▾

Question

A sample of gas expands from volume V 1 to V 2 . The amount of work done by the gas is greatest when the expansion is

Choices

Choice (4) Response

a.

Isobaric

b.

Equal in all cases

c.

Adiabatic

d.

Isothermal

Question number: 1284

» Properties of Solids & Liquids » Elastic Behavior

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Bulk modulus of elasticity (K) represents incompressibility of the material.

Reason (Ꭱ)

Bulk modulus of elasticity is proportional to change in pressure.

Choices

Choice (4) Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

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