NEET Physics: Questions 1861 - 1864 of 2098

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 1861

» Gravitation » Energy

Assertion-Reason▾

Assertion (Ꭺ)

If an earth satellite moves to a lower orbit, there is some dissipation of energy but the speed of gravitational satellite increases.

Reason (Ꭱ)

The speed of satellite is a constant quantity.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 1862

» Gravitation » Kepler's Laws of Planetary Motion

MCQ▾

Question

The Jupiter’s period of revolution round the Sun is 12 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.

5.242

b.

3.242

c.

2.242

d.

4.242

Question number: 1863

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v equal to the velocity of sound. If the observer also moves away from the source with the same velocity v, the apparent frequency heard by the observer is,

Choices

Choice (4) Response

a.

200 Hz

b.

100 Hz

c.

150 Hz

d.

50 Hz

Question number: 1864

» Gravitation » Geo-Stationary Satellites

MCQ▾

Question

The moon revolves round the earth 13 times in one year. If the ratio of sun-earth distance to earth-moon distance is 393, then the ratio of masses of sun and earth will be –

Choices

Choice (4) Response

a.

356

b.

365

c.

1

d.

3.56 ⨯ 10 5

Sign In