Atoms — Physics STD 12 Science — Question

In which of the following is the interference due to the division of wave front (a) Young's double slit experiment(b) Fresnel's biprism experiment(c) Lloyd's mirror experiment   (d) Demonstration colours of thin film

Nuclear fusion is common to the pair(a) Thermonuclear reactor, uranium based nuclear reactor(b) Energy production in sun, uranium based nuclear reactor(c) Energy production in sun, hydrogen bomb(d) Disintegration of heavy nuclei, hydrogen bomb

Which of the following statement is correct? 

A capacitor is used to store 24 watt hour of energy at 1200 volt. What should be the capacitance of the capacitor(a) 120 mF(b) 120 μF(c) 24 μF(d) 24 mF

Opening up of strips of an electroscope is an indication of:

In Young’s experiment, the distance between slits is 0.28 mm and distance between slits and screen is 1.4 m. Distance between central bright fringe and third bright fringe is 0.9 cm. What is the wavelength of used light (a) 5000 Å(b) 6000 Å(c) 7000 Å(d) 9000 Å

A coil having an inductance of 0.5 H carries a current which is uniformly varying from zero to 10 ampere in 2 second. The e.m.f. (in volts) generated in the coil is(a) 10(b) 5 (c) 2.5(d) 1.25

How does the red shift confirms that the universe is expanding (a) Due to Wien's law(b) Due to Stefan's law(c) Due to Kirchhoff's law(d) Due to Doppler's effect