NEET Physics: Questions 1437 - 1439 of 2099

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Question number: 1437

» Wave Optics » Huygens' Principle

MCQ▾

Question

Two waves originating from source S 1 and S 2 having zero phase difference and common wavelength X will show completely destructive interference at a point P if (S 1 P - S 2 P) is-

Choices

Choice (4) Response
a.

3λ4

b.

11λ2

c.

5λ

d.

2 λ

Question number: 1438

» Properties of Solids & Liquids » Specific Heat Capacity

MCQ▾

Question

Heat is supplied to a certain homogenous sample of matter, at a uniform rate. Its temperature is plotted against time, as shown. Which of the following conclusions can be drawn?

Temperature vs time graph - homogenous sample of matter

Temperature vs Time Graph - Homogenous Sample of Matter

In above fig we show that the graph of temp vs time which describe effect of heat on certain homogenous matter.

(1) Its specific heat capacity is greater in the liquid state than in the solid state

(2) Its latent heat of vaporization is greater than its latent heat of fusion

(3) Its specific heat capacity is greater in the solid state than in the liquid state

(4) Its latent heat of vaporization is smaller than its latent heat or fusion

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

Choices

Choice (4) Response
a.

1, 2 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1 and 3 are correct

Question number: 1439

» Properties of Solids & Liquids » Heat Transfer » Conduction

MCQ▾

Question

Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in fig. with their ends at 100°C, 50°C and 20°C. The temperature of their junction is

Three rod of same dimension

Three Rod of Same Dimension

In above figure it is shown that three rod of same dimension have thermal conductivities 3K, 2K and K.

Choices

Choice (4) Response
a.

70°C

b.

60°C

c.

50°C

d.

35°C

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