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.
141
Which statement is not one of Kepler's laws? A. Planets orbit in ellipses with the Sun at one focus. B. All planetary orbits are coplanar. C. The Sun-planet line sweeps equal areas in equal times. D. Orbital period squared is proportional to semi-major axis cubed.
RRB RPF SI
09/12/2024 / Shift III
2024
✓ Answer:CB
Statement B is not a Kepler law. The three laws concern elliptical orbits, equal areas and T² ∝ a³.
142
A body in free fall experiences:
RRB Group-D
20/09/2018 / Shift I
2018
✓ Answer:AWeightlessness
Free fall gives apparent weightlessness because there is no supporting normal force. Gravitational force itself need not be zero.
143
An object is thrown upward at 14 m/s and reaches a height of 10 m. How long does it take to reach the highest point?
RRB Group-D; RRB ALP & Technician
06/12/2018 / Shift II; 29/08/2018 / Shift III
2018; 2018
✓ Answer:D1.43 s
With g = 9.8 m/s², t = u/g = 14/9.8 ≈ 1.43 s.
144
Above Earth's surface, g increases with:
RRB Group-D
10/10/2018 / Shift I
2018
✓ Answer:DDecreasing height
Reducing altitude decreases distance from Earth's centre and increases gravitational acceleration.
145
A body is projected vertically upward. What is its velocity at its highest point?
RRB Group-D
15/10/2018 / Shift I
2018
✓ Answer:AZero
At the top, the body momentarily has zero vertical velocity before descending.
146
When a body is moved from the equator to either pole, its weight:
RRB Group-D
22/10/2018 / Shift II
2018
✓ Answer:CIncreases
Effective surface gravity increases from equator to poles.
147
How far does a freely falling body released from rest travel in 2 s?
RRB Group-D
16/11/2018 / Shift II
2018
✓ Answer:C19.6 m
Using g = 9.8 m/s², s = gt²/2 = 4.9 × 4 = 19.6 m.
148
Where is a body's weight minimum among these surface locations?
RRB Group-D
24/10/2018 / Shift II
2018
✓ Answer:AEquator
Effective surface gravity is smallest at the equator.
149
A car falls and reaches the ground in 0.4 s. What is its impact speed, assuming zero initial vertical speed and g = 10 m/s²?
RRB Group-D
22/11/2018 / Shift III
2018
✓ Answer:D4 m s⁻¹
v = gt = 10 × 0.4 = 4 m/s.
150
A stone hangs from a spring balance. When is the reading lowest?
RRB Group-D
16/10/2018 / Shift III
2018
✓ Answer:CCompletely submerged in water
Complete submersion gives the greatest displaced water volume and buoyant force, reducing apparent weight the most.
Showing 141 – 150 of 162 MCQ Questions | Page 15 of 17
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