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Ask QuestionPosted by Harsh Kumar 8 years, 1 month ago
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Posted by Anviksha Mangal 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
Beacuse wood's ignition temperature is much higher than what heat it gets by burning matchstick. As a substance burns only when it reaches its ignition temperature. Wood needs more enery to reach its ignition temperature, hence cannot be burned by a matchstick.
Posted by Nivedita Gouda 8 years, 1 month ago
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Aryan Shaw 8 years, 1 month ago
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Janhvi Dwivedi 8 years, 1 month ago
Posted by Rohit Singh 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
Some light that falls on any surface is scattered back (reflected). A rough surface tends to scatter the light in different directions while a smooth surface tends to scatter more of the original (incident) rays straight back. This explains why a smooth surface reflects a "clearer" image than that reflected from a rough surface.
Posted by Shivnandan Sharma 8 years, 1 month ago
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Posted by Science Sir 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
An electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body. It was the first electrical measuring instrument. The first electroscope, a pivoted needle called the versorium. Electroscopes detect electric charge by the motion of a test object due to the Coulomb electrostatic force. Since the electric potential or voltage of an object with respect to ground equals its charge divided by its capacitance to ground, an electroscope can be regarded as a crude voltmeter.
The suspended strips and the metal rod are able to conduct electricity. The metal rod passes through the jar with a stopper that is not capable of conducting electricity. When a charged object is brought near the metal rod, both strips repel each other and resemble an inverted V. The strips repel each other because they have acquired a like charge. When the strips have a like charge and separate, the electroscope becomes charged. If an object with the opposing charge is brought near the metal rod, the strips of gold leaf will hang straight down. The strips no longer repel each other because the charge has been neutralized. After neutralization, the electroscope becomes discharged. Electroscopes are commonly used in laboratories and industries for experiments and measuring electric currents. Electroscopes can also be used to detect various types of radiation from radioactive material. The electroscope, the first electrical measuring instrument, was invented by British physician William Gilbert. The pith-ball and the gold-leaf electroscopes are the most commonly used simple electroscopes.
Posted by Ashwani Rawat 8 years, 1 month ago
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Sahaj Jain 8 years, 1 month ago
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Posted by Arshdeep Kaur Grawal 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
Reproduction is the process by which new organisms are generated. It is the mechanism of species continuation. There are two means of reproducing: asexual and sexual reproduction.
Posted by Neha Gupta 8 years, 1 month ago
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Posted by Prince Verma Verma 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
Eletroscope is an instrument for detecting and measuring electricity, especially as an indication of the ionization of air by radioactivity.
Posted by Palash Bhatt 8 years, 1 month ago
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Posted by Hanuman Jadhav 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
The flow of electric current causes the following effects in a conductor:
- heating effect,
- chemical effect,
- magnetic effect.
Posted by Fatema Fatema 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
Crop production is a branch of agriculture that deals with growing crops for use as food and fiber. Degree programs in crop production are available at undergraduate and graduate levels.
Posted by Chapati Hindustani Gamers 8 years, 1 month ago
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Abhi Sharma 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
Iodine solution is made by mixing iodine into a mixture of potassium iodide; this mixture is commonly used to check for starch.
Posted by Samya Mukherjee 8 years, 1 month ago
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Posted by Ayush Chandan 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the lightwill reflect at the same angle as it hit the surface. This is called specular reflection.
Posted by Avinash Kumar 8 years, 1 month ago
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Kishan Chaudhary 8 years, 1 month ago
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Sir Ap 8 years, 1 month ago
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