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Work and Energy
100
Dynamics
87
Kinematics
98
Transfer of Heat
51
Turning Effect of Forces
62
Gravitation
46
Matter Properties
94
Thermal Properties of Matter
103
Atomic and Nuclear Physics
101
Basic Electronics
101
Current Electricity
187
Electromagnetism
101
Electrostatics
123
Geometrical Optics
204
Information and Communication Technology
100
Simple Harmonic Motion and Waves
96
Sound
108
Show/Hide Answers
Geometrical Optics
A medical procedure using any type of endoscope is called
ultrasound
surgery
endoscopy
physiotherapy
Author:
rikazzz
Comment
Geometrical Optics
An image of a statue appears to be 12.6 cm behind a concave mirror with a focal length of 14.5 cm. The distance between the mirror and the statue is
6.74 cm
9.82 cm
4.56 cm
11.6 cm
Author:
rikazzz
Comment
Turning Effect of Forces
The number of perpendicular components of a force are
1
2
3
4
Author:
rikazzz
Comment
Physics
When does land breeze occur?
Fall
Winter
Both A & B
Hot summer
Land breeze occur during fall and winter.
Author:
rikazzz
Comment
Physics
Flywheel is an important part of a steam engine because it :
Accelerates the speed of the engine
Helps the engine in keeping the speed uniform
Decreases the moment of inertia
Gives strength to the engine
A flywheel is a rotating mechanical device that is used to store rotational energy. Flywheels have a significant moment of inertia and thus resist changes in rotational speed, enabling the engine to run at a constant, uniform motion. In the Industrial Revolution, James Watt contributed to the development of the flywheel in the steam engine.
Author:
rikazzz
Comment
Physics
The fuse in an electric circuit is connected in
Series with neutral
Parallel to live
Parallel to neutral
Series with live
Fuses are always connected in series with the components to be protected from overcurrent, so that when the fuse blows (opens) it will open the entire circuit and stop current through the components.
Author:
rikazzz
Comment
Matter Properties
Mass of the liquid cylinder is equal to its
volume × density
volume + density
volume / density
volume – density
Author:
rikazzz
Comment
Thermal Properties of Matter
The evaporation from the surface of any liquid depends on
temperature
wind
nature of liquid
all of above
Author:
rikazzz
Comment
Work and Energy
If a stone of mass 500 g strikes the ground with velocity of 20 ms
-1
 then kinetic energy at that point is
10 J
40 J
75 J
100 J
Author:
rikazzz
Comment
Information and Communication Technology
The instructions or programs that tell the hardware what to do are known as
hardware
procedures
data
software
Author:
rikazzz
Comment
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