Pooja Pathak

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Asked Questions

X-rays are not deflected by electric and magnetic field why?

The electric field and magnetic fields deflect only charged particles. the X-rays, being electromagnetic radiation of short wavelength, are charge less. Hence, they are not deflected by electric and magnetic fields.

X-rays can penetrate through the flesh of meat but not through the bones why?

The flesh of meat made up from lighter elements but the bones are made from heavier elements. So, that X-rays penetrate through the flesh meat but not through the bones. Further, the penetrating power of X-rays can be controlled by controlling the voltage between cathode and the target. For a medical purposes, X-rays are produced in such a way that the X-rays penetrate through the flesh but not through bones.

X-rays can penetrate through the flesh of meat but not through the bones why?

Why don't we notice the quantization of energy in everyday life?

We do not notice the quantization of energy in everyday activities becausequantization means that particles are made up of a finite amount of units of energy. Also, quantization of energy is only seen in the atoms and atoms can only take up certain discrete values of energy.

Production of X-rays is the reverse phenomenon of photoelectric effect. justify

When fast moving electrons strike on high atomic weight substance, X-rays areproduced and when radiations of sufficient frequency incident on the metal surface, electrons are emitted I.e.photoelectric effect take place. It means fast moving electronsproduce X-ray and X-ray I.e.radiation produce photoelectrons. Hence X-ray is the reverse phenomena of photoelectric effect

Why X-rays are not visible?

If the wavelength of electromagnetic waves lies between 4000Å to 8000Å, then such types of waves are visible. But the wavelength of X-rays lies between 1Å to 300 Å, Hence they are invisible.

A string is divided into three segments, so that the segments possess fundamental frequencies in the ratio 1:2:3. Then, the lengths of the segments are in the ratioa.6:3:3 c.4:2:1b.4:...