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Aparna Sahu
Subject: Physics
, asked on 7/2/18
Solve this.
Q.
If the end correction of an open organ pipe is 0.8 cm, then the inner radius of the pipe will be
1/2 cm
1/3 cm
2/3 cm
3/2 cm
Answer
1
Aparna Sahu
Subject: Physics
, asked on 7/2/18
Solve this.
In Meld's experiment, 6 loops were formed, when the string was stretched by a weight 6 gram. What weight should be used to produce 3 loops, without changing the experiment set up?
12 gram wt.
18 gram wt.
24 gram wt.
16 gram wt.
Answer
2
Aparna Sahu
Subject: Physics
, asked on 7/2/18
Solve this.
Q. If the fifth overtone of a closed pipe is in unison with the fifth overtone of an open pipe, then the ratio of the length of closed pipe to open pipe will be
A. 11 : 12
B. 12 : 11
C. 13 : 11
D. 11 : 13
Answer
1
Aparna Sahu
Subject: Physics
, asked on 6/2/18
Solve this.
Q). A wire under tension vibrates with a frequency of 450 cycles per sound. What would be the fundamental frequency if the wire were half as long, twice as thick and under one fourth tension?
a) 225 cps
b) 190 cps
c) 247 cps
d) 174 cps
Answer
1
Aparna Sahu
Subject: Physics
, asked on 2/2/18
Q. The equation of a progressive wave is y = 8 sin
π
t
10
-
x
4
+
π
3
. The wavelength of the wave is
(a) 8 m (b) 4 m
(c) 2 m (d) 10 m
Answer
2
Aparna Sahu
Subject: Physics
, asked on 18/1/18
Solve :-
At what temperature, the r.m.s. speed of the molecules of a gas is half its value at NTP
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 15/1/18
Q. A particle of mass m is moving with a velocity V. What is its de Broglie wavelength?
Answer
1
Dipesh Malhotra
Subject: Physics
, asked on 12/1/18
15 part 2 and 3
Q). Answer the following questions:
(ii). If earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.
(iii). Electromagnetic wave exerts pressure on the surface on which it is incident. Justify.
Answer
1
Aditya Jayaprakash
Subject: Physics
, asked on 8/1/18
Q.8. Name the elctromagnetic waves, which are produced by:
a. Vibrations of atoms and molecules.
b. Rapid acceleration of electrons in conducting wires.
c. Stopping fast moving electrons by metal targets.
d. Radioactive decay of a nucleus.
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 6/1/18
No links Please
Q .
Define a virtual object. Show with the help of diagrams how images of virtual objects are formed by convex and concave lenses.
Answer
1
Deepshika Subramani
Subject: Physics
, asked on 3/1/18
name the physical quantity that remains unchanged in the electromagnetic spectrum
Answer
1
Alifa
Subject: Physics
, asked on 29/12/17
Why does a galvanometer when connected in series with a capacitor shows momentary deflection when it is being charged or discharged? How does this observation lead to modifying the ampere's circuital law?
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 25/12/17
No links please
Short Question
Q.1. What is displacement current? How is it generated?
Answer
1
Ashlesha
Subject: Physics
, asked on 11/12/17
in chapter em waves where there is given about the different waves..under the heading of detection of gamma rays..its written -do- ..what does that mean?? pls reply as soon as possible
Answer
1
Deepshika Subramani
Subject: Physics
, asked on 23/11/17
a light wave E=E
0 a sin 2pie(v/t-z/lamda) meets another wave producing a node at z=0. what is the equation of the other wave? pls explain these type of question how to approach and solve ?? )
Answer
1
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What are you looking for?
Q. If the end correction of an open organ pipe is 0.8 cm, then the inner radius of the pipe will be
1/3 cm
2/3 cm
3/2 cm
In Meld's experiment, 6 loops were formed, when the string was stretched by a weight 6 gram. What weight should be used to produce 3 loops, without changing the experiment set up?
18 gram wt.
24 gram wt.
16 gram wt.
Q. If the fifth overtone of a closed pipe is in unison with the fifth overtone of an open pipe, then the ratio of the length of closed pipe to open pipe will be
A. 11 : 12
B. 12 : 11
C. 13 : 11
D. 11 : 13
Q). A wire under tension vibrates with a frequency of 450 cycles per sound. What would be the fundamental frequency if the wire were half as long, twice as thick and under one fourth tension?
a) 225 cps
b) 190 cps
c) 247 cps
d) 174 cps
Q. The equation of a progressive wave is y = 8 sin . The wavelength of the wave is
(a) 8 m (b) 4 m
(c) 2 m (d) 10 m
At what temperature, the r.m.s. speed of the molecules of a gas is half its value at NTP
Q). Answer the following questions:
(ii). If earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain.
(iii). Electromagnetic wave exerts pressure on the surface on which it is incident. Justify.
a. Vibrations of atoms and molecules.
b. Rapid acceleration of electrons in conducting wires.
c. Stopping fast moving electrons by metal targets.
d. Radioactive decay of a nucleus.
Q . Define a virtual object. Show with the help of diagrams how images of virtual objects are formed by convex and concave lenses.
Short Question
Q.1. What is displacement current? How is it generated?