Experimental observations have shown that X-rays
travel in vacuum with a speed of `3 xx 10^8 m s^(-1)`. What conclusion can be drawn about the nature of X-rays from this observation?

Experimental observations have shown that X-rays exhibit the phenomenon of diffraction and can be polarised.What conclusion can be drawn about the nature of X-rays from this observation?

Does Lagrange's mean value theorem apply to f(x) = x^(1//3), - 1 le x le 1 . What conclusions can be drawn?

Electromgnetic waves travel in a medium with a speed of 2 xx 10^8 m s^(-1) .The relative permeability of the medium is 1.Find the relative permittiity.

A train, standing in a station-yard, blows a whistle of frequency 400 Hz in still air. The wind starts blowing in the direction from the yard to the station with a speed of 10 m s^-1 . What are the frequency, wavelength, and speed of sound for an observer standing on the station’s platform? Is the situation exactly identical to the case when the air is still and the observer runstowards the yard at a speed of 10 m s^-1 ? The speed of sound in still air can be taken as 340 m s ^-1 .

Write the nature of the material having resistivity of the order of 1.7 xx 10^-8 Omega m

In a chamber, a uniform magnetic field of 6.5 G (1 G = 10^-4 T) is maintained. An electron is shot into the field with a speed of 4.8 xx 10^6 m s^-1 normal to the field. Explain why the path of the electron is a circle. Determine the radius of the circular orbit. (e = 1.5 xx 10^-19 C. m_e= 9.1x10^-31 kg)

The refractive index of glass is 1.5 and that of water is 1.3.If the speed of light in water is 2.25 xx 10^8 m s^(-1) ,what is the speed of light in glass?

A group between x/m and the presure P of the gas at a constant temperature is called adsorption siotherm. Where x is the no. of moles of the adsorbate and m is the mass of the adsorbent. adsoption isotherms of different shaopes have been experimentally observed .. According to frundlich adosroption isthem, x//m = KP^(1//n) where K and N are constant paraments depending upon the nature of the solid and gas Adsoption isothem of log (x/m) and log P was found of the type .

A group between x/m and the presure P of the gas at a constant temperature is called adsorption siotherm. Where x is the no. of moles of the adsorbate and m is the mass of the adsorbent. adsoption isotherms of different shaopes have been experimentally observed .. According to frundlich adosroption isthem, x//m = KP^(1//n) where K and N are constant paraments depending upon the nature of the solid and gas graph between log (x/m) and log P is a straight line a t angle 45^(@) with intercept OA as shown . hence, (x/m) at a pressure of 2 atm is :

A hill is 500 m high. Supplies are to be sent across the hill using a canon that can hurl packets at a speed of 125 m//s over the hill. The canon is located at a distance of 800m from the foot of hill and can be moved on the ground at ba speed of 2 m//s, so that its distance from the hill can be adjusted. What is the shortest time in which a packet can reach on the ground across the hill? Take g= 10 m//s^(2) .