NEET Physics: Questions 1325 - 1330 of 2099

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Question number: 1325

» Properties of Solids & Liquids » Terminal Velocity

Assertion-Reason▾

Assertion (Ꭺ)

Bernoulli’s theorem holds for incompressible, non-viscous fluids.

Reason (Ꭱ)

The factor v22g is called velocity head.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
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 false

Question number: 1326

» Wave Optics » Young's Double Slit Experiment

MCQ▾

Question

In Young’s experiment the wavelength of red light is 7.5 × 10 -5 cm. and that of blue light 5.0 × 10 -5 cm. The value of n for which (n + l) th blue bright band coincides with n th red bright band is-

Choices

Choice (4) Response
a.

8

b.

4

c.

1

d.

2

Passage

Read the passage given below and answer the questions that follows:

In a thermally insulated tube of cross sectional area 4 cm 2 a liquid of thermal expansion coefficient 10 -3 K -1 is flowing. Its velocity at the entrance is 0.1 m/s. At the middle of the tube a heater of a power of 10 kW is heating the liquid. The specific heat capacity of the liquid is 1.5 kJ/ (kg K), and its density is 1500 kg/m 3 at the entrance.

Question number: 1327 (1 of 3 Based on Passage) Show Passage

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

What is the density of liquid at the exit?

Choices

Choice (4) Response
a.

1350kgm3

b.

1400kgm3

c.

1450kgm3

d. None of the above

Question number: 1328 (2 of 3 Based on Passage) Show Passage

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

How much bigger is the volume rate of flow at the end of the tube than at the entrance in cubic meters?

Choices

Choice (4) Response
a.

13×105

b.

9×105

c.

49×105

d. None of the above

Question number: 1329 (3 of 3 Based on Passage) Show Passage

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

The rise in temperature of the liquid as it pass through the tube is

Choices

Choice (4) Response
a.

(19)0C

b.

(5009)0C

c.

(10009)0C

d. Question does not provide sufficient data or is vague

Question number: 1330

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

A viscous fluid is flowing through a cylindrical tube. The velocity distribution of the fluid is best represented by the diagram

Choices

Choice (4) Response
a.
Viscous fluid is flowing through a cylindrical tube – Choice A

Viscous Fluid Is Flowing Through a Cylindrical Tube – Choice A

Velocity distribution of the fluid depicted here

b.
Viscous fluid is flowing through a cylindrical tube – Choice B

Viscous Fluid Is Flowing Through a Cylindrical Tube – Choice B

Velocity distribution of the fluid depicted here

c.
 Viscous fluid is flowing through a cylindrical tube – Choice C

Viscous Fluid Is Flowing Through a Cylindrical Tube – Choice C

Velocity distribution of the fluid depicted here

d. Question does not provide sufficient data or is vague

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