At 10⁰C the value of the density of a fixed mass of an ideal gas divided by its pressure
At 10⁰C the value of the density of a fixed mass of an ideal gas divided by its pressure is x. At 110⁰ C this ratio is:
Options
(a) x (b) (383 / […]
AIPMT2008
A thin rod of length L and mass M is bent at its midpoint into two halves
A thin rod of length L and mass M is bent at its midpoint into two halves so that the angle between them is 90°. The moment of inertia of the bent rod about an […]
The ratio of the radii or gyration of a circular disc to that of a circular ring
The ratio of the radii or gyration of a circular disc to that of a circular ring, each of same mass and radius, around their respective axes is:
Options
(a) √3 : √2 […]
An electric kettle takes 4A current at 220 V. How much time will it take to boil 1 kg
An electric kettle takes 4A current at 220 V. How much time will it take to boil 1 kg of water from temperature 20⁰C? The temperature of boiling water is 100⁰C
Options
(a) 12.6 […]
Curie temperature above which
Curie temperature above which
Options
(a) paramagnetic material becomes ferromagnetic material (b) ferromagnetic material becomes diamagnetic material (c) Ferromagnetic material becomes paramagnetic material (d) paramagnetic material becomes diamagnetic material
Correct Answer:
Ferromagnetic material becomes […]
A particle of mass m, charge Q and kinetic enery T enters a transverse
A particle of mass m, charge Q and kinetic enery T enters a transverse uniform magnetic field of induction B⃗. After 3 seconds, the kinetic energy of the particle will be:
Options
(a) […]
A boy is trying to start a fire by focusing sunlight on a piece of paper using
A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10 cm. The diameter of the sun is 1.39 x 10⁹ m […]
Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial.
Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial. The power of the combination is:
Options
(a) √ f₁ / f₂ (b) √ f₂ / f₁ (c) f₁ […]
The periodic waves of intensities I₁ and I₂ pass through a region at the same time
The periodic waves of intensities I₁ and I₂ pass through a region at the same time in the same direction. The sum of the maximum and minimum intensities is:
Options
(a) I₁ + […]
Green chemistry means such reaction which
Green chemistry means such reactions which
Options
(a) Are related to the depletion of ozone layer (b) Study the reactions in plants (c) Produce colour during reactions (d) Reduce the use and production […]