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Mukul Agrawal
Subject: Physics
, asked on 26/3/18
Block is slightly displaced horizontally and released. Find time period of SHM.
Answer
1
Mukul Agrawal
Subject: Physics
, asked on 25/3/18
Q). The block is slightly displaced horizontally and released. Find time period of SHM.
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 13/3/18
No links please
Q. Establish the relation between electron volt and erg. The maximum energy of a photon emitted from a metal due to light of wavelength 5000 Å is 0.3 eV. Calculate the work fulnction of the metal.
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 12/3/18
Q. In a double slit experiment, a dichromatic light of wave length 6500 A and 5200 A are used. What is the minimum distance from the central bright band at where the bright band of each of the colours will superpose? Given distance between two slits is
2
×
10
-
3
m and distance between slits and screen is 1.2 m.
Answer
1
Sandra Saju
Subject: Physics
, asked on 7/3/18
What is the source of the energy carried by a propogating electromagnetic wave
Answer
3
Chaitanya Kapoor
Subject: Physics
, asked on 6/3/18
Solve this:
13. Electromagnetic waves with wavelength
(i) is used in satellite communication.
(ii) is used to kill germs in water purifiers.
(iii) is used to detect leakage of oil in underground pipelines.
(iv) is used to imporve visibility in runways, during fog and mis conditions.
Answer
2
Keerthana Baskar
Subject: Physics
, asked on 2/3/18
Please answer both these questions asap
Answer
3
Brendan
Subject: Physics
, asked on 1/3/18
Q.22. A magnetic field in a plane electromagnetic wave is given by,
B
y
=
3
×
10
-
7
sin
1
.
5
r
a
d
/
m
x
+
5
×
10
8
r
a
d
/
s
t
t
e
s
l
a
(a) What is the wavelength and frequency of the wave?
(b) Write down the expression for the electric field. (x in metre and t in second).
Answer
1
Chaitanya Kapoor
Subject: Physics
, asked on 28/2/18
Prove that displacement current equals conduction.current
Answer
1
Tanya Pandey
Subject: Physics
, asked on 28/2/18
Q. A parallel-plate capacitor with plate area A and separation between the plates d is charged by a constant current I.Consider a plane surface of area A/2 parallel to the plates and drawn symmetrically between the plates. Find the displacement current through this area.
Answer
1
Kurian J
Subject: Physics
, asked on 28/2/18
Q. Plz explain the transverse nature of EM waves??
Answer
1
Keerthana Baskar
Subject: Physics
, asked on 28/2/18
Pls answer both the questions asap
Answer
2
Starstudded Akanksha
Subject: Physics
, asked on 25/2/18
an em wave travels through a medium and has velocity v=vi. in what direction are the electric and magnetic field vectors oscillating.
Answer
1
Sandra Saju
Subject: Physics
, asked on 25/2/18
Please help with this question . ( No links please)
Q. Why does a galvanometer when connected in series with a capacitor show a momentary deflection, when it is being charged or discharged?
How does this observation lead to modifying the Ampere's circuital law?
Hence write the generalized expression of Ampere's law.
Answer
1
Vinuthna Terala
Subject: Physics
, asked on 25/2/18
No links pls
Q.18. A) Name the em waves which are produced when high energy electrons are bombarded on a metal target. Give one use of this waves.
B) Give one use of micro waves and ultra violet em waves.
Answer
1
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Q. Establish the relation between electron volt and erg. The maximum energy of a photon emitted from a metal due to light of wavelength 5000 Å is 0.3 eV. Calculate the work fulnction of the metal.
13. Electromagnetic waves with wavelength
(i) is used in satellite communication.
(ii) is used to kill germs in water purifiers.
(iii) is used to detect leakage of oil in underground pipelines.
(iv) is used to imporve visibility in runways, during fog and mis conditions.
(a) What is the wavelength and frequency of the wave?
(b) Write down the expression for the electric field. (x in metre and t in second).
Q. Why does a galvanometer when connected in series with a capacitor show a momentary deflection, when it is being charged or discharged?
How does this observation lead to modifying the Ampere's circuital law?
Hence write the generalized expression of Ampere's law.
Q.18. A) Name the em waves which are produced when high energy electrons are bombarded on a metal target. Give one use of this waves.
B) Give one use of micro waves and ultra violet em waves.