Physics Question - QS Study

Explain Kepler’s law of planetary motion

A German astronomer, Johann Kepler, first stated the laws of planetary motion. The three laws of planetary motion are: The law of orbits: Every planet......

Stationary Satellite

The time period of rotation of some artificial satellites are the same as that of the earth. These satellites appear to be stationary to the......

Artificial Satellites

The spacecraft revolved around the earth about its prescribed orbits are known as artificial satellites. To revolve round the earth, the artificial satellites must be......

Gravitation and Gravity

Gravitation The force of attraction between any two bodies of the universe is called gravitation. The attraction between the sun and the earth is an......

What do you mean by sensitivity of a thermometer?

For measuring temperature a sensitive thermometer is needed. A thermometer is said to be sensitive when it is placed in the body (whose temperature is......

Describe Green house effect from Wien’s law

In colder countries, glass walled houses are constructed to preserve the vegetation’s during the winter season. These are called Green Houses, which serve as effective......

Define Absorptive Power

The absorptive power of a body (or a surface) is defined as the ratio of the energy absorbed in a given time (or in a......

All resonances are forced vibrations

When a body capable of vibration is subjected to the action of an external periodic force, the vibrates irregularly at initial stage but later on......

All harmonics are overtones

In a sample of musical note the tone, which have minimum frequency is called fundamental tone. Except the fundamental tone all other tones are called......

What is the difference between musical sound and noise?

The difference between musical sound and noise are: Musical Sound: A sound which produces a pleasant effect on our mind is called musical sound. Singing......

What is Intensity?

Intensity: The rate of flow of sound energy through unit area placed normal to the direction of propagation of sound is called intensity. Intensity of......

What is Tone?

Tone: A musical sound having a single frequency is called tone. A musical sound, generally consists of a number of components having different frequencies, is......