Physics General Science Test Hard Mode

Sr. #	Questions	Answers Choice
1	Which of the following sources give discrete emission spectrum?	Incandescent electric bulb Sun Mercury vapour lamp Candle
2	There are discrete energy levels in atoms. It was first experimentally demonstrated by	Rutherford's experiment Frank Hertz experiment Marsden's experiment Sommerfield experiment
3	The minimum wavelength of the X-rays produced by electrons accelerated through a potential difference of V volts is directly proportional to	√V V<sup>2</sup> 1/√V 1/V
4	The essential distinction between X-rays and y-rays is that	y-rays have smaller wavelength than X-rays y-rays emanate from nucleus while X-rays emanate from outer part of the atom y-rays have greater ionizing power than X-rays y-rays are more penetrating than X-rays
5	A photoelectric cell converts	Electrical energy to light energy Light energy to light energy Light energy to electrical energy Light energy to elastic energy

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