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 |
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. |
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 |
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 |