AIM :-
To study the relation between frequency and the length of a stretched string with the help of a sonometer.
PRECAUTIONS :-
The wire should be of uniform cross-section and there should not be any twist or bend in it.
The pulley should rotate without friction.
Put that much weight in the pan so that the deformation produced in the wire should not exceed the elastic limit.
The stem of the tuning fork, not its prongs, should be placed on the sonometer box or on the support.
Apparatus:- A sonometer,
tuning forks ( of frequencies from 256 Hz – 512 Hz),
a pan or a hanger of known weight,
four to five 500 gm weights,
a paper rider,
a rubber-pad and
a meter rule.
Dear Friends In Old Version in Physics Practical there is 19 Physics practical. which all practical i am going to upload for quick understanding about practical. I am making this blog for standard 12 which is under uploading more practical so be with me you will get practical presentation download free.
AIM :-
To compare the frequencies of two tuning forks using a resonance tube and to find the end-correction. Repeat the experiment for two other tuning forks .
Find the lengths (l) of the resonating air columns for tuning forks of five different frequencies.
Draw a graph of 1 / f --
APPARATUS :-
A metallic tube open at both the ends (known as resonance tube),
a cylinder( of glass or metal) for filling water, a stand,
a meter rule,
a rubber-pad and tuning forks( two of known frequencies and two of unknown frequencies).
Apparatus for Resonance Tube
Resonance Tube Practical
OBSERVATION TABLE :-
(1) Least count of the vernier callipers = cm
(2) Internal diameter of the resonance tube : d1 = cm; d2 = cm
Average diameter d = cm
Practicle – 2 MEASUREMENT OF RESISTANCE ( WHEATSTONE’S BRIDGE)
AIM :-
You are given a Wheatstone bridge and other necessary instruments. Find the values of the unknown resistance Rx. Exchange the positions of unknown resistance and resistance box in the gaps of Wheatstone bridge and repeat the experiment.
PRINCIPLE :-
It works on the principle of balanced Wheatstone bridge.
APPARATUS:-
Wheatstone-bridge (meter-bridge),
2 Volt Battery,
Rheostat,
Galvanometer,
Jockey,
Key,
Resistance box(1 – 100 W),
Resistance coil.
Apparatus for Wheatstone's Bridge Practicle
Precautions :-
Make proper and tight connections.
Keep the keys tightly closed in the resistance box.
Adjust the value of resistance box so that null point is obtained between 40 cm and 60 cm.
Do not slide the jokey continuously over the wire.
Note :- Keep high resistance of rheostat in the beginning of each observation so that current is less and the galvanometer is not damaged. After getting approximate position of null point only decrease the resistance of rheostat.
(1)Condition :- Connect unknown resistance Rx between M – N.
Line Diagram For Wheatstone's Bridge
Wiring Diagram for Wheatstone’s Bridge. Use this setup for carry out practical so it may be easy to understand.
Wiring Diagram for Wheatstone's Bridge
Measure L1 and L2 and note down in your Table.
(2) Condition :- Interchange unknown resistance Rx between P – Q.
In which interchange
Unknown Resistance RX and Known Resistance Box RB.
Line Diagram for Interchange RX And RB
Wiring Diagram for Wheatstone’s Bridge. (Condition-2)
In which interchange Unknown Resistance RX and Known Resistance Box RB. Use this setup for carry out practical so it may be easy to understand.
You are given a Wheatstone Bridge and other necessary instruments. Find the values of the unknown resistance Rx and Ry . Now connect them in series and parallel respectively and measure their resultant resistances and test the laws of series and parallel connections.
PRINCIPLE :- It works on the principle of a balanced Wheatstone bridge.
It would be interesting to know how Father's Day came into practice and celebrated worldwide with an equal sincerity and respect as any other significant holidays. Here's a short history on the holiday, and meaning of the different colors of roses to be worn that Day. You may even refer the page to others to share the information by clicking on the link given below.
About 4,000 years ago a young boy named Elmusu wished his Babylonian father good health and a long life by carving a Father's Day message on a card made out of clay. No one knows what happened to Elmesu or his father, but the tradition of having a special day honoring fathers has continued through the years in countries across the world.
The Countries, where the Catholic Church were of significant influence on the culture of the society, Father's Day is celebrated on St. Joseph's Day (March 19). However, a more secular celebration which is not associated with any religion is followed in recent times to highlight the increased diversity among people from all over the globe coexisting together in one place.
Father's Day is celebrated popularly on 3rd Sunday in June in many parts of the world. The idea for creating a day for children to honor their fathers began in Spokane, Washington. A woman by the name of thought of the idea for Father's Day while listening to a Mother's Day sermon in 1909. Having been raised by her father, Henry Jackson Smart, after her mother died, Sonora wanted her father to know how special he was to her. It was her father that made all the parental sacrifices and was, in the eyes of his daughter, a courageous, selfless, and loving man. Sonora's father was born in June, so she chose to hold the first in Spokane, Washington on the 19th of June, 1910.
In 1924 President Calvin Coolidge proclaimed the third Sunday in June as Father's Day. President Nixon, in 1972, established a permanent national observance of Father's Day to be held on the third Sunday of June. So Father's Day was born as a token of love and gratitude that a daughter cherishes for her beloved father. Roses are the Father's Day flowers: red to be worn for a living father and white if the father has died.
