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.
131
A car falls to the ground in 0.7 s. What is its impact speed, assuming zero initial vertical speed and g = 10 m/s²?
RRB Group-D
11/10/2018 / Shift I
2018
✓ Answer:D7 m/s
v = gt = 10 × 0.7 = 7 m/s.
132
How is gravitational acceleration represented?
RRB JE
23/05/2019 / Shift IV
2019
✓ Answer:BLowercase English letter g
Lowercase g denotes acceleration due to gravity; uppercase G denotes the universal gravitational constant.
133
For h much smaller than Earth's radius R, how does the ratio of gravity at depth h to gravity at altitude h vary with h?
RRB Group-D
02/11/2018 / Shift I
2018
✓ Answer:DIt increases linearly
In the uniform-density approximation, g_depth ≈ g(1 - h/R) and g_height ≈ g(1 - 2h/R). Their ratio is approximately 1 + h/R.
134
A truck falls from an edge and reaches the ground in 0.8 s. What is the height, assuming zero initial vertical speed and g = 10 m/s²?
RRB Group-D
22/09/2018 / Shift I
2018
✓ Answer:D3.2 m
h = gt²/2 = 5 × 0.8² = 3.2 m.
135
Which force keeps planets revolving around the Sun?
RRB Technicians Grade-III
27/12/2024 / Shift II
2024
✓ Answer:DGravity
The Sun's gravity supplies the inward force that maintains planetary orbits.
136
Which statements are true? A. Gravity on Mount Everest is greater than surface g. B. Gravity there is less than surface g. C. A ball thrown vertically and returning after 15 s has speed 75 m/s. D. Such a ball has speed 150 m/s.
RRB Group-D
31/10/2018 / Shift II
2018
✓ Answer:AOnly B and D
The source selects A but incorrectly uses the full flight time as the acceleration time from rest. For a 15 s return flight with g = 10 m/s², launch and return speeds are 75 m/s, so B and C are true. No listed option matches; the source key is retained and flagged.
137
A boy on a 20 m tower releases a stone. What is its speed on reaching the ground? Take g = 10 m/s².
RRB Group-D
28/09/2018 / Shift II
2018
✓ Answer:A20 m/s
Assuming release from rest, v = √(2gh) = √400 = 20 m/s. The source says 'throws' but supplies no launch velocity; its solution assumes u = 0.
138
Which force causes the Moon's orbital motion around Earth?
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