NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1933 - 1938 of 2184
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Question number: 1933
» Experimental Skills » Meter Bridge
Question
A meter-bridge is based on the principle of
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Wheatstone bridge |
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| b. | Variation of resistance with temperature |
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| c. | Galvanometer |
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| d. | None of the above |
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Question number: 1934
» Oscillations and Waves » Harmonics
Question
A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance 1.21 A between them. The wavelength of the standing wave is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3.63 Å |
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| b. | 2.42 Å |
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| c. | 1.21 Å |
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| d. | 6.05 Å |
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Question number: 1935
» Communication System » Basic Elements of Communication System
Question
A laser is a coherent source because it contains,
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Coordinated wave of many wavelengths |
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| b. | Many wavelengths |
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| c. | Coordinated waves of a particular wavelength |
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| d. | Uncoordinated wave of a particular wavelength |
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Question number: 1936
» Communication System » Basic Elements of Communication System
Question
An antenna is a device,
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | That converts electromagnetic energy into radio frequency signal. |
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| b. | That converts guided electromagnetic waves into free space electromagnetic waves and vice-versa. |
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| c. | That converts radio frequency signal into electromagnetic energy. |
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| d. | None of the above |
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Question number: 1937
» Gravitation » Kepler's Laws of Planetary Motion
Question
The semi-major axes of the orbits of mercury and mars are respectively 0.387 and 1.524 in astronomical unit. If the period of Mercury is 0.241 year, what is the period of Mars?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3.2 years |
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| b. | 1.2 years |
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| c. | 1.9 years |
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| d. | 3.9 years |
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Question number: 1938
» Gravitation » Escape Velocity
Question
and denotes the escape velocity from the earth and another planet having twice the radius and the same mean density as the earth. Then which of the following is (are) wrong?
(1)
(2)
(3)
(4)
Select the correct answers with mark it according to the following codes:
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 1.2 and 3 are correct |
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| b. | 1 and 3 are correct |
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| c. | 1 and 4 are correct |
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| d. | 1 and 2 are correct |
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