The Sum Of The First And Third Term Of An Arithmetic Progression Is 12 And The Product Of First And Second Term Is 24 Then First Term Is
(1) 1 (2) 8 (3) 4 (4) 6 Solution: Let a-d, a , a+d be the 3 terms of AP.... View Article
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The Sum Of The Integers From 1 To 100 Which Are Not Divisible By 3 Or 5 Is
(1) 2489 (2) 4735 (3) 2317 (4) 2632 Solution: Sum of integers which are not divisible by 3 or 5... View Article
What Is H In Magnetic Field
H is the magnetic field produced by the flow of current through the wire. The expression for H can be... View Article
Why Is Silicon A Semiconductor
An atom of silicon has 14 electrons around the nucleus. Out of these 14, four are valence electrons. The atoms... View Article
Is Aluminium A Semiconductor
Aluminium nitride, aluminium phosphide, aluminium phosphide, aluminium antimonide and aluminium arsenide are examples of semiconductor materials. Semiconductor materials have the... View Article
What Materials Can Block Radiation
Lead is a well-suited material for blocking x-rays and gamma rays. Lead has a high atomic number that makes it... View Article
Is Lead A Semiconductor
Lead sulfide is also known as galena is an important compound of lead. It was one of the earliest materials... View Article
Which Rays Will Deflect In Electric Field
The alpha rays and beta rays get deflected by the electric field. Alpha rays are positively charged and beta rays... View Article
Is Diamond An Insulator
Diamond is a thermal conductor and an electrical insulator. They have a large bandgap and do not have any free... View Article
What Would Happen If A Transformer Is Connected To A Dc Supply
When a DC voltage is connected to the primary of the transformer, the constant current produces a constant flux. The... View Article
Which Two Types Of Motion Are Observed While Rolling A Ball
The two types of motion of the rolling ball are translational motion and rotational motion. The centre of mass of... View Article
What Is The Relationship Between Mass And Acceleration When Force Is Constant
According to Newton’s second law of motion, acceleration is inversely proportional to the mass when the force is a constant.... View Article
What Is The Major Difference Between Static Electricity And Current Electricity
The major difference between static electricity and current electricity is that in static electricity the charges are at rest and... View Article
Can Dc Voltage Kill You
What actually kills a person is current and not the voltage. The current that can pass through the body depends... View Article
Why Can A Carnot Engine Not Get Hundred Percent Efficiency
The efficiency of the heat engine cannot be 100%. The efficiency is given as Efficiency =1 – (T2/T1) T2 is... View Article
What Material Can Block Electromagnetic Fields
Electromagnetic shielding is the process of using conductive or magnetic materials to block electromagnetic fields. The materials used for shielding... View Article
Does Angular Momentum Of A Body In Translatory Motion Is Zero
The angular momentum of a body in translatory motion is zero only when the origin is along the direction of... View Article
Which Phenomenon Is Considered To Be The Inverse Of Photoelectric Effect
The phenomenon of x-ray production is considered to be the inverse of the photoelectric effect. The photoelectric effect is when... View Article
Why Cant Astronauts Hear Each Other In Space
Sound is a mechanical wave and requires a material medium for propagation. There is nothing in space. There is no... View Article
Why Does A Pendulum Eventually Stop Swinging
The pendulum stops eventually because of air resistance. The pendulum loses energy because of friction. Only in a theoretical situation... View Article
