NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1847 - 1850 of 2320
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Question number: 1847
» Gravitation » Kepler's Laws of Planetary Motion
Question
The Jupiter s period of revolution round the Sun is 10 times that of the Earth. Assuming the planetary orbits are circular, how many times the distance between the Jupiter and Sun exceeds that between the Earth and the sun.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 4.242 | |
b. | 5.242 | |
c. | 2.242 | |
d. | 4.641 | |
Question number: 1848
» Experimental Skills » Potentiometer
Question
The potential gradient of a potentiometer can be increased by which of the following operation?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | By decreasing the current through it. | |
b. | By using a wire of material of low specific resistance. when A is decreased, k will increase. | |
c. | By increasing the area of cross-section of potentiometer wire. | |
d. | By decreasing the area of cross-section of the potentiometer wire. | |
Question number: 1849
» Gravitation » Escape Velocity
Question
Acceleration due to gravity on a planet is 12 times the value on the earth. Escape velocity for the planet and the earth are V p and V e respectively. The ratio of the radii of the planet and the earth is 2: 1, then –
Choices
| Choice (4) | Response | |
|---|---|---|
a. |
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b. |
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c. |
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d. |
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Question number: 1850
» Oscillations and Waves » Doppler Effect in Sound
Question
A whistle sends out 210 waves in a second. If the whistle approaches the observer with velocity 1/4 of the velocity of sound in air, the number of waves per second the observer will receive
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 320 | |
b. | 182 | |
c. | 384 | |
d. | 280 | |