NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1270 - 1275 of 5119

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Question 1270

Question MCQ▾

A wire of length l m and area of cross section 4 × 10-8 m2 increases in length by 0.4 cm when a force of 14 N is applied. Value of Y for the material of the wire will be

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 1271

Question MCQ▾

A thin metal disc of radius r floats on water surface and bends the surface downwards along the perimeter making an angle 9 with vertical edge of the disc. If the disc displaces a weight of water W and surface tension of water is T, then the weight of metal disc is

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 1272

Question MCQ▾

When a mica sheet (µ = 1.6) of thickness 7 microns is placed in the path of one of interfering beams in the biprism experiment then the central fringe gets shifted at the position of seventh bright fringe. The wavelength of light used will be –

Choices

Choice (4)Response

a.

4000Å

b.

6000 Å

c.

7000 Å

d.

5000 Å

Edit

Passage

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

In the figure n mole of a monoatomic ideal gas undergo the process ABC as shown in the P-V diagram. The process AB is isothermal and BC is isochoric. The temperature of the gas at A is T0 . Total heat given to the gas during the process ABC is measured to be Q.

Graph of Pressure vs Volume (2V and 6V)

Question 1273 (1 of 3 Based on Passage)

Question MCQ▾

Temperature of the gas at C is equal to

Choices

Choice (4)Response

a.

3T0

b.

T0

c.

2T0

d.

6T0

Edit

Question 1274 (2 of 3 Based on Passage)

Question MCQ▾

Heat absorbed by the gas in the process BC

Choices

Choice (4)Response

a.

6nRT0

b.

nRT0

c.

3nRT0

d.

2nRT0

Edit

Question 1275 (3 of 3 Based on Passage)

Question MCQ▾

The average molar heat capacity of the gas in process ABC is

Choices

Choice (4)Response

a.

b.

c.

d.

Edit