- If
_{g}is the ratio of specific heats and R is the universal gas constant, then the molar specific heat at constant volume C_{v}is given by- g
^{R}

- g
- If µ0 is permeability of free space and Î0 is permittivity of free space, the speed of light in vacuum is given by

If an electron and a proton have the same de-Broglie wavelength, then the kinetic energy of the electron is- zero
- less than that of a proton
- more than that of a proton
- equal to that of a proton

- If the linear momentum of a body is increased by 50%, then the kinetic energy of that body increases by _____
- 225%
- 25%
- 100%
- 125%

- In a Fraunhofer diffraction experiment at a single slit using a light of wavelength 400 nm, the first minimum is formed at an angle of 300. The direction of the first secondary maximum is given by
- Sin
^{-1} - Sin
^{-1} - Sin
^{-1} - Tan
^{-1}

- Sin
- In a series resonant R-L-C circuit, the voltage across R is 100 V and the value of R = 1000 W. The capacitance of the capacitor is 2 ´ 10
^{-6}F; angular frequency of AC is 200 rad s-1. Then the P.D. across the inductance coil is ______.- 250 V
- 400 V
- 100 V
- 40 V

- In an unbiased p-n junction
- Potential at p is more than that at n
- Potential at p is less than that at n
- Potential at p is equal to that at n
- Potential at p is +ve and that at n is -ve

- In Young's double slit experiment, a third slit is made in between the double slits. Then
- intensity of fringes totally disappears.
- only bright light is observed on the screen.
- fringes of unequal width are formed.
- contrast between bright and dark fringes is reduced.

- lf a black body emits 0.5 joules of energy per second when it is at 27°C , then the amount of energy emitted by it when it is at 627°C will be
- 40.5 J
- 162 J
- 13.5 J
- 135 J