cumulative frequency table about science

Question: The frequency which is not audible to the human ear is 1. 50 Hz 2. 500 Hz 3. 5000 Hz 4. 50000 Hz Answer: ..

Question: Which of the following will remain unchanged when a sound wave travels in air or in water? 1. Amplitude 2. Wavelength 3. Frequency 4. Speed Answer: ..

Question: If a vibrator strikes the water 10 times in one second, then the frequency of wave is _________. 1. 10 Hz 2. 0.5 Hz 3. 5 Hz 4. 0.1 Hz Answer: ..

Question: A source of frequency of 500 Hz emits waves of wavelength 0.4 m, how long does the waves take to travel 600 m? 1. 3 s 2. 6 s 3. 9 s 4. 12 s Answer: ..

(EEG) An instrument called electro encephalograph can record electrical activity of brain. The activity of the brain is recorded as electric potentials. Such a record is called electro encephalogram (EEG). By placing two electrodes on the scalp and leading via suitable amplifier to ink-writing devi..

Cattle Breed Distribution Milch Breeds Gir Gujarat, Rajasthan Sahiwal Punjab, Haryana, Uttar Pradesh Red Sindhi Andhra Pradesh Draught Breeds Malvi Rajasthan, Madhya Pradesh Nageri Delhi, Haryana, Uttar Pradesh Hallikar Karnataka K..

The modern periodic table is also known as the long form of the periodic table or the extended form of the periodic table..

Position of Elements in the Modern Periodic Table - Types of Elements On the basis of electronic configuration, the elements of the periodic table are classified into: Noble gases Normal elements Transition elements Inner-transition elements Alkali metals Haloge..

In 1869, Mendeleev classified the then known 56 elements on the basis of their physical and chemical properties in the increasing order of the atomic masses, in the form of a table. Mendeleev had observed that properties of the elements orderly recur in a cyclic fashion. He found that th..