266547 Photoelectric effect supports quantum nature of light, because- (i) there is minimum frequency of light below which no photoelectrons are emitted, (ii) Electric charge of photo electrons is quantized (iii) Maximum kinetic energy of photo electron \& depends only on the frequency of light and not on its intensity. (iv) Even when metal surface is faintly illuminated the photo electrons leave the surface immediately.

266548 A uniform metal chain is placed on a rough table such that one end of it hangs down over the edge of the table. When \(4 / 5\) of its length hangs over the edge, the chain starts sliding. Then the coefficient of kinetic friction can be- :

266549 In young's double slit experiment, the fringe width is \(1 \times 10^{-4}\), if the distance biw the slit and screen is doubled and the distance b/w the two slit is Reduced to half and wave length is changed from \(6.4 \times 10^{-7} \mathrm{~m}\) to \(4 \times 10^{-7} \mathrm{~m}\), the value of new fringe width will be-

266550 A child is standing with folded hands at the center of a platform rotating about its central axis. The Angular momentum is L . The child now stretches his arms so that moment of inertia of the system doubles. The Angular momentum of the system now is:

266547 Photoelectric effect supports quantum nature of light, because- (i) there is minimum frequency of light below which no photoelectrons are emitted, (ii) Electric charge of photo electrons is quantized (iii) Maximum kinetic energy of photo electron \& depends only on the frequency of light and not on its intensity. (iv) Even when metal surface is faintly illuminated the photo electrons leave the surface immediately.

266548 A uniform metal chain is placed on a rough table such that one end of it hangs down over the edge of the table. When \(4 / 5\) of its length hangs over the edge, the chain starts sliding. Then the coefficient of kinetic friction can be- :

266549 In young's double slit experiment, the fringe width is \(1 \times 10^{-4}\), if the distance biw the slit and screen is doubled and the distance b/w the two slit is Reduced to half and wave length is changed from \(6.4 \times 10^{-7} \mathrm{~m}\) to \(4 \times 10^{-7} \mathrm{~m}\), the value of new fringe width will be-

266550 A child is standing with folded hands at the center of a platform rotating about its central axis. The Angular momentum is L . The child now stretches his arms so that moment of inertia of the system doubles. The Angular momentum of the system now is:

266547 Photoelectric effect supports quantum nature of light, because- (i) there is minimum frequency of light below which no photoelectrons are emitted, (ii) Electric charge of photo electrons is quantized (iii) Maximum kinetic energy of photo electron \& depends only on the frequency of light and not on its intensity. (iv) Even when metal surface is faintly illuminated the photo electrons leave the surface immediately.

266548 A uniform metal chain is placed on a rough table such that one end of it hangs down over the edge of the table. When \(4 / 5\) of its length hangs over the edge, the chain starts sliding. Then the coefficient of kinetic friction can be- :

266549 In young's double slit experiment, the fringe width is \(1 \times 10^{-4}\), if the distance biw the slit and screen is doubled and the distance b/w the two slit is Reduced to half and wave length is changed from \(6.4 \times 10^{-7} \mathrm{~m}\) to \(4 \times 10^{-7} \mathrm{~m}\), the value of new fringe width will be-

266550 A child is standing with folded hands at the center of a platform rotating about its central axis. The Angular momentum is L . The child now stretches his arms so that moment of inertia of the system doubles. The Angular momentum of the system now is:

266547 Photoelectric effect supports quantum nature of light, because- (i) there is minimum frequency of light below which no photoelectrons are emitted, (ii) Electric charge of photo electrons is quantized (iii) Maximum kinetic energy of photo electron \& depends only on the frequency of light and not on its intensity. (iv) Even when metal surface is faintly illuminated the photo electrons leave the surface immediately.

266548 A uniform metal chain is placed on a rough table such that one end of it hangs down over the edge of the table. When \(4 / 5\) of its length hangs over the edge, the chain starts sliding. Then the coefficient of kinetic friction can be- :

266549 In young's double slit experiment, the fringe width is \(1 \times 10^{-4}\), if the distance biw the slit and screen is doubled and the distance b/w the two slit is Reduced to half and wave length is changed from \(6.4 \times 10^{-7} \mathrm{~m}\) to \(4 \times 10^{-7} \mathrm{~m}\), the value of new fringe width will be-

266550 A child is standing with folded hands at the center of a platform rotating about its central axis. The Angular momentum is L . The child now stretches his arms so that moment of inertia of the system doubles. The Angular momentum of the system now is: