21⟩ Two person are waking same speed. One is walking state and another walking circle. Who will go long distance?
both travell same distance bcoz they tarvel with same speed
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“General Physics frequently Asked Questions in various General Physics job Interviews by interviewer. The set of General Physics interview questions here ensures that you offer a perfect answer to the interview questions posed to you. Get preparation of General Physics job interview”
45 General Physics Questions And Answers
22⟩ Why is n-type conductor is neutral?
N-type semiconductors are prepared by doping pentavalent
atom (e.g. phosphorus) with the intrinsic semiconductor. we
know that atoms are neutral. out of five electron of P-atom
four makes covalent bond. one of the electron is only free
to move. it is remains in the material not escaping so the
n-type semiconductor material is neutral.
23⟩ What type(amount) of capacitors are used in fan?
fixed capacitors are used in fans.As you can see on the
capacitor by yourself. its capacitance is generally from
4-6 micro farad.variable capacitor is used in radio
24⟩ Can a huge amount can be saved in a capacitor?
no. It depends on its storage capacity
25⟩ When taken to the top of a mountain, a clock will go fast or go slow or no change or stop?
The mountain clock will run faster IF COMPARED TO A SEA LEVEL CLOCK because the flow of TIME is Slowed by gravity and the gravity is slightly less on the mountain top. The flow of time affects ALL processes though, so compared to the (local) speed of light, or (any other mountain top measurement) the clock will appear to run exactly at the same rate. It is only a RELATIVE measurement (compared to the sea-level clock) that would show a different rate. The Scientists Pound-Rebka at Harvard University verified this effect with an atomic clock experiment. The effect would be WAY WAY too small to see with an ordinary clock though. It might take millions of years to see a one-second difference in two ordinary clocks.
26⟩ Why are metals able to conduct current so well?
because of the very small band gap between the valence band and the conduction band, making it very easy for electrons to go from one to another and be qualified as "free" electrons.
27⟩ What is relation between magnetic and electricity and why?
magnet is produced the magnetic lines of forces.these lines are called magnetic flux.whenever varying magnetic flux linked with the coil, the induced emf is produced.this emf is called induced emf. the corresponding current is known as induced current.current is nothing but a electricity.
28⟩ Why ship doesnt sink sea?
Ship displyed much more water as compared to its weight.
29⟩ What is H1N1?
H1N1 is a type of virus causing swine flu.
30⟩ What is the difference between photodiode & photocell?
A photocell, also refered as a photoresistor has a resitance that depends on the intensity of light that is hitting it.
This is not the case for photodiodes, which light to current (or tension) conversion depends not on the intensity of light but on the operating mode : (photovoltaic zero biased for example)
31⟩ What is the difference between collector & emitter of transistor, even though material used for both same?
Emitter is highly doped whereas collector is moderately
doped.Width of collector region is most and that of emitter
is less than it.Charges moves from emitter to collector.
32⟩ How we are getting light from electrical bulb?
shortly by thermionic emission the light bulb contains a
filament. this filament has a cathode and an anode. when we
switch on the bulb.then the cathode of the filament becomes
hot. due to this thermal electrons are ejected from the
cathode and move towards anode.on the path of electrons,
they make an elastic collision with the gas molecules
within the tube or filament. so the atoms of the gas are
raised to higher energy states. when these atoms dexcite
then light is emitted as predicted by Bohr theory
33⟩ The principle of action of points is used in ___________?
lightning arrestors
34⟩ Which of the following would be the most suitable for making an electromagnet?
soft iron core is most suitable for making an electromagnet
35⟩ What is the melting point of copper?
copper melt at 1084 degrees
36⟩ What is the meaning of ‘steady state’ in the context of transmission of heat?
It refers to heat flowing(transmitted) at a constant rate.
37⟩ Name of the ten satellite launched from India and year of launch?
1. Aryabhata(1975)
2. Bhaskara-I(1979)
3. Bhaskara-II(1981)
4. APPLE(1981)
5. Rohini(1980)
6. IRS(1980)
7. INSAT(1982)
8. INSAT-2B(1993)
9. INSAT-2C(1995)
10.GSAT-I(2001)
38⟩ Graph between frequency of photon and velocity of photo electron?
photon energy proportional to frequency
is given to electron as kinetic energy
which is proportional to square of velocity
graph will be parabolic
39⟩ Suppose a car is traveling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. at 72kmph, how long did it take for the car to cover that distance?
The answer is 5 hrs. The description is below.
D/72 + 1.0 = D/60
12 D = 72 x 60
D = 72 * 5 = 360 km
t= 360 / 72 = 5 hrs
40⟩ In one optical instrument, what is the effect of using two converging lenses?
more focus
