Practice Gravitation RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise question set covers important concepts of gravitation that are useful for RRB Physics preparation.
The questions cover important concepts such as Newton’s law of gravitation, gravitational force, acceleration due to gravity, variation of gravity, mass and weight, gravity and motion under gravity, satellite motion, escape velocity and related numerical and conceptual questions.
Gravitation RRB PYQ questions are useful for candidates preparing for Gravitation RRB NTPC PYQ, Gravitation RRB Group D PYQ, Gravitation RRB JE PYQ, Gravitation RRB ALP PYQ and Gravitation RRB Technician PYQ. Solve the questions, check the solutions, and strengthen your understanding of important concepts frequently relevant to Railway exams.
Start practicing Gravitation RRB PYQs and improve your Physics preparation for upcoming Railway examinations.
151
At the highest point of an object thrown vertically upward:
RRB NTPC (Stage-I)
02/04/2016 / Shift III
2016
✓ Answer:BVelocity is zero and acceleration is about 10 m/s²
The velocity is momentarily zero, but gravitational acceleration remains downward at approximately 9.8 m/s².
152
An object has mass 10 kg. What is its weight on Earth?
RRB Group-D
25/09/2018 / Shift I
2018
✓ Answer:B98 N
Using g = 9.8 m/s², W = 10 × 9.8 = 98 N.
153
A bullet is fired vertically upward at 196 m/s. What maximum height does it reach? Take g = 9.8 m/s².
RRB JE
14/12/2014 / Red Paper
2014
✓ Answer:A1960 m
h = u²/(2g) = 196²/19.6 = 1960 m, neglecting air resistance.
154
What is the approximate escape speed at Earth's surface?
RRB NTPC (Stage-II)
18/01/2017 / Shift I
2017
✓ Answer:B11.2 km/s
v_escape = √(2GM/R) ≈ 11.2 km/s, neglecting air resistance and Earth's rotation.
155
What do the terms geocentric and heliocentric refer to?
RRB NTPC (Stage-I)
04/04/2016 / Shift I
2016
✓ Answer:AModels of planetary motion centred on Earth and the Sun
Geocentric means Earth-centred; heliocentric means Sun-centred. The source describes these as laws, but they are models of the planetary system.
156
How long does a geostationary satellite at approximately 35,786 km altitude take to complete one orbit?
RRB NTPC (Stage-I)
17/01/2017 / Shift I
2017
✓ Answer:B24 hours
Its orbital period equals Earth's sidereal rotation period, about 23 h 56 min, conventionally rounded to 24 hours.
157
Who proposed the laws of planetary motion?
RRB NTPC (Stage-I)
20/01/2021 / Shift I
2021
✓ Answer:BJohannes Kepler
Johannes Kepler formulated the three laws of planetary motion.
158
Who discovered the laws of planetary motion?
RRB NTPC (Stage-I)
27/03/2021 / Shift II
2021
✓ Answer:DKepler
Kepler formulated the laws describing planetary orbits.
159
Which statement is not true about Kepler's laws?
RRB NTPC (Stage-I)
07/04/2016 / Shift III
2016
✓ Answer:DThe orbital period depends on the planet's mass
In the usual approximation of a planet much less massive than the Sun, T² ∝ a³ and does not depend on the planet's mass.
160
What is the shape of a planet's orbit around the Sun?
RRB NTPC (Stage-I)
16/04/2016 / Shift I
2016
✓ Answer:DElliptical
Kepler's first law specifies an ellipse with the Sun at one focus.
Showing 151 – 160 of 162 MCQ Questions | Page 16 of 17
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