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### 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:

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(a) x (b) (383 / […]

### 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:

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(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

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(a) 12.6 […]

### Curie temperature above which

Curie temperature above which

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(a) paramagnetic material becomes ferromagnetic material (b) ferromagnetic material becomes diamagnetic material (c) Ferromagnetic material becomes paramagnetic material (d) paramagnetic material becomes diamagnetic material

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:

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(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:

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(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:

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(a) I₁ + […]

### Green chemistry means such reaction which

Green chemistry means such reactions which

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(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 […]

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