Tuesday, May 26, 2015

The energy(E), angular momentum(L) and universal gravitational constant (G) are chosen as fundamental quantites. The dimensions of universal graviitational constant in the dimensional formula of Plank's constant (h) is
B)- 1
C)5 / 3

Monday, May 25, 2015

Newton's first law of motion leads to the concept of  

Thursday, April 30, 2015

A metal ball of mass 2 kg moving with a speed of 36 km/hr has a head-on collision with a stationary ball of mass 3 kg. If after collision, both the balls move together, then loss in kinetic energy due to collision is
A)40 J
B)60 J
C)100 J
D)140 J

Monday, April 27, 2015

One mole of an ideal gas undergoes an isothermal change at temperature 'T' so that its volume v is doubled. T is the molar gas constant. Work done by the gas during this change is
A)RT log 4
B)RT log 2
C)RT log 1
D)RT log 3

Wednesday, April 22, 2015

Two particles P and Q start from origin and execute Simple Harmonic Motion along X - axis with same amplitude but with periods 3 seconds and 6 seconds respectively. The ratio of the velocities of P and Q when they meet is
A)1 : 2
B)2 : 1
C)2 : 3
D)3 : 2

Tuesday, April 21, 2015

If a straight line perpendicular to 2x - 3y + 7 = 0 forms a triangle with the coordinate axes whose area is 3 sq. units, then the equation of the straight line(s) is
A)3x + 2y = ± 7
B)3x + 2y = ± 6
C)3x + 2y = ± 8
D)3x + 2y = ± 4

Monday, April 20, 2015

A ray of light is incident on the surface of a slab of refractive index 1.5 and of thickness 't' so that the ray of light has angle of refraction 600, then the time taken to cross the slab will be