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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
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Physics
The complete form of ‘IC’ in electronics is
Internal circuit
Independent circuit
Integrated circuit
Inbuilt circuit
IC stands for Integrated Circuit. It is a set of electronic circuits on one small plate (“chip”) of semiconductor material, normally silicon. Also known as chip or microchip, ICs are the heart and brains of most circuits and are are a keystone of modern electronics.
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Comment
Physics
At boiling point of liquids, its
Temperature increases
Atmospheric pressure increases
Temperature remains constant
Vapour pressure decreases
At boiling point of liquids, its temperature remains constant.
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rikazzz
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Physics
An object that has kinetic energy must be
At an elevated position
Falling
At rest
Moving
In physics, we know that the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Hence, An object that has kinetic energy must be in motion i.e, moving.
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rikazzz
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Physics
Brightness of bulb depends on voltage or current?
Current
Voltage
Both A & B
None
Brightness of bulb depends on both voltage and current. The brightness depends on power._x000D_ Since we know that Power (P) = Voltage x Current = V I_x000D_ So whether you increase the current or the voltage the brightness will increase.
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rikazzz
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Physics
Scalar Quantities are
Physical quantities which have magnitude only and no direction
Physical quantities which have no magnitude only and only direction
Physical quantities which have magnitude only and direction
Physical quantities which have no magnitude and no direction
Scalar Quantities are physical quantities which have magnitude only and no direction.
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rikazzz
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Physics
Why does bleeding occur through the nose in high mountainous regions ?
The pressure of blood in capillaries is greater than the outside pressure
The pressure at high altitudes is greater than that on the plains
The blood pressure of a person increases at high altitudes
The blood pressure fluctuates and finally decreases drastically
Nosebleeds can be caused by being up in a very high altitude. As you climb higher, the amount of oxygen in the air decreases. This makes the air thinner and dryer, which can in turn cause the inside of your nose to crack and bleed.
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rikazzz
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Physics
What principle/law explains the working of the hydraulic brakes in automobiles ?
Bernoulli’s law
Posieulle’s principle
Pascal’s law
Archimedes’ principle
The hydraulic brakes in automobiles works on the principle of Pascal’s law.
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rikazzz
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Everyday Science
A telescope can make stars look:
Bigger
Brighter
Smaller
All of above
Stars are not magnified by telescopes. Telescopes collect more light and make it brighter.
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Everyday Science
Human ear cannot hear sound of frequency more than?
10,000 Hz
20,000 Hz
5,000 Hz
15,000 Hz
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rikazzz
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Everyday Science
Human ear cannot hear sound of frequency less than?
20 Hz
30 Hz
10 Hz
40 Hz
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rikazzz
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