NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1331 - 1335 of 2184

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Question number: 1331

» Wave Optics » Interference

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MCQ▾

Question

The intensities of two light sources are I and 9I respectively. If the phase difference between the waves emitted by them is π then the resultant intensity at the point of observation will be –

Choices

Choice (4) Response

a.

3I

b.

4I

c.

82I

d.

10I

Question number: 1332

» Thermodynamics » Concept of Temperature

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MCQ▾

Question

An ideal gas expands isothermally from a volume V 1 to V 2 and then compressed to original volume V 1 adiabatically. Initial pressure is P 1 and final pressure is P 3. The total work done is W. Then

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1333

» Properties of Solids & Liquids » Surface Energy and Surface Tension

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MCQ▾

Question

Radius of a capillary tube is 2 x 10 -3 m. A liquid of weight 6.28 x 10 -4 N may remain in the capillary tube then the surface tension of liquid will be

Choices

Choice (4) Response

a.

50 N/m

b.

5 x 10 -2 N/m

c.

5 N/m

d.

5 x 10 -3 N/m

Question number: 1334

» Properties of Solids & Liquids » Thermal Expansion

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MCQ▾

Question

80 gm of copper is heated to increase its temperature 10°C. If the same quantity of heat is given to 10 gm water, the rise in its temperature is (Specific heat of copper = 420 Joule-kg -1 C -1)

Choices

Choice (4) Response

a.

5°C

b.

8°C

c.

7°C

d.

6°C

Question number: 1335

» Properties of Solids & Liquids » Young's Modulus

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MCQ▾

Question

Which of the following relations are false

(1)

(2)

(3)

(4)

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1,2 and 3 are correct