Two planets at mean distances d₁ and d₂ from the sun have their frequencies n₁ and n₂ respectively. Then
Options
(a) n₁²d₁²=n₂²d₂² (b) n₁²d₁³=n₂²d₂³ (c) n₁d₁²=n₂d₂² (d) n₁²d₁=n₂²d₂
Correct Answer:
n₁²d₁³=n₂²d₂³
Explanation:
Apply […]
The ratio of radii of planets A and B is K₁ and ratio of accelerations due to gravity on them is K₂. The ratio of escape velocities from them will be
Options
(a) […]
The acceleration due to gravity near the surface of a planet of radius R and density d is proportional to
Options
(a) d/R² (b) dR² (c) dR (d) d/R
Correct Answer:
dR
Explanation: […]
A satellite is launched into a circular orbit of radius R around earth while a second satellite is launched into an orbit of radius 1.02R. The percentage difference in the time periods of the two […]
If the density of earth is doubled keeping its radius constant then acceleration due to gravity will be (g=9.8 m/s²)
Options
(a) 19.6 m/s² (b) 9.8 m/s² (c) 4.9 m/s² (d) 2.45 m/s²
A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth. Then,
Options
(a) the linear momentum […]
A remote-sensing satellite of earth revolves in a circular orbit at a height of 0.25 x 10⁶ m above the surface of earth. If earth’s radius is 6.38 x 10⁶ m and g=9.8 ms⁻², then […]
Two spherical bodies of mass M and 5 M and radii R and 2 R released in free space with initial separation between their centres equal to 12 R. If they attract each other due […]
Kepler’s third law states that square of period of revolution (T) of a planet around the sun, is proportional to third power of average distance r between sun and planet i.e. T²=Kr³ here K is […]
Dependence of intensity of gravitational field (E) of earth with distance(r) from centre of earth is correctly represented by
Options
(a)
(b)
(c)
(d)
Correct Answer: Explanation:
No explanation available. Be the […]
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