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PG TRB Physics Study Material. We covered all the PG TRB Physics Study Material in this post for free so that you can practice well for the exam.
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PG TRB Physics Mock test for Students
Two identical cylinders are released from the top of two identical inclined planes. If one rolls without slipping and the other slides without rolling, then:
a) The sliding cylinder reaches the bottom first with a higher speed
b) The rolling cylinder reaches the bottom first with higher speed
c) Both reach the bottom at the same time
d) Cannot be predicted
Option a – The sliding cylinder reaches the bottom first with a higher speed
Two spheres, one hollow and one Solid, with the same Mass and radius, roll down an inclined plane from the same height. Which reaches the bottom first?
a) Hollow sphere
b) Solid sphere
c) Both reach simultaneously
d) Cannot be predicted
Option b – Solid sphere
A and B are two Solid spheres of equal Mass. A rolls down an inclined plane without slipping from a height of 3 m, while B falls vertically from the same height. On reaching the ground:
a) A can do more work than B
b) B can do more work than A
c) Both A and B do the same work
d) Neither A nor B does any work
Option c – Both A and B do the same work
A Solid cylinder of radius 10 cm rolls down an inclined plane of height 25 cm without slipping. Its linear speed at the bottom is:
a) 280 cm/s
b) 180 cm/s
c) 18 cm/s
d) 28 cm/s
Option b – 180 cm/s
For a ring rolling down an incline, the percentage of energy in translational and rotational kinetic energy is:
a) 50% and 50%
b) 25% and 75%
c) 75% and 25%
d) 30% and 70%
Option a – 50% and 50%
A hollow cylinder and a Solid cylinder with the same Mass and radius roll down an incline. Which reaches the bottom first?
a) Solid cylinder
b) Hollow cylinder
c) Both at the same time
d) The one with higher material density
Option a – Solid cylinder
A rod of length 1.5 m is hung at one end in a horizontal position and then released. Its angular speed when it reaches the vertical position is:
a) 5.2 rad/s
b) 4.43 rad/s
c) 3.13 rad/s
d) 2.25 rad/s
Option b – 4.43 rad/s
A meter scale stands vertically on a table. The speed of its free end when it falls without slipping (g = 10 m/s²) is:
a) 4.9 m/s
b) 5.5 m/s
c) 9.8 m/s
d) 30 m/s
Option b – 5.5 m/s
A disc of Mass 2 kg rolls on a horizontal surface at 2 m/s. Its total kinetic energy is:
a) 1 J
b) 2 J
c) 3.5 J
d) 6 J
Option d – 6 J
A sphere of Mass 1 kg and diameter 1 m rolls on a horizontal surface at 10 m/s without slipping. The work needed to stop it is:
a) 50 J
b) 70 J
c) 100 J
d) 25 J
Option b – 70 J
A ring, disc, and hollow sphere of equal Mass and radius are released from an incline simultaneously. Their descent times differ because:
a) Different frictional forces
b) Different materials
c) Different contact areas
d) Different radii of gyration
Option d – Different radii of gyration
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Also, check out:
- ICSE Physics Class 10 Current Electricity Important Questions
- Bihar Board Class 11 Physics Question Paper
- 12th Physics One Mark Study Material
