NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1308 - 1311 of 5119

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Question 1308

Question MCQ▾

The force required to separate two glass plates of area 10-2 m2 with a film of water 0.05 mm thick between them, is (Surface tension of water is 70 × 10-3 N/m)

Choices

Choice (4)Response

a.

38 AT

b.

28 N

c.

14 N

d.

50 N

Edit

Question 1309

Question MCQ▾

Two rods A and B are of equal lengths. Their ends are kept between the same temperature and their areas of cross-sections are A1 and A2 and thermal conductivities K1 and K2. The rate of heat transmission in the two rods will be equal, if

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 1310

Question Assertion-Reason▾

Assertion(Ꭺ)

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

Reason(Ꭱ)

The factor 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 true but Ꭱ is false

c.

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

d.

Both Ꭺ and Ꭱ are false

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Question 1311

Question MCQ▾

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 nth red bright band is-

Choices

Choice (4)Response

a.

1

b.

4

c.

2

d.

8

Edit