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qUESTIONS

A particle of mass M at rest decays into two masses m and m, with non-zero velocities. The ratio of de-Broglie wavelengths of the particles λ1/ λ2 is

If a drop of water is broken in to smaller drops the surface energy

A proton and α-particle are accelerated through same potential difference. The ratio of their de-Broglie wavelengths, will be

On the surface of the liquid in equilibrium, molecules of the liquid possess

If nR and nv denote the number of photons emitted by a red bulb and violet bulb of equal power in a given time, then

A charged particle of mass m and charge q is released from rest in an uniform electric field E neglecting the effect of gravity, the kinetic energy of the charged particle after t second is

When a glass capillary tube of radius 0.015 cm is dipped in water, the water rises to height of 15 cm within it. Assuming contact angle between water and glass to be 0°, the surface tension of water is [Pwater 1000 kg m-³, g= water 9.81 ms-¹

The energy of incident photons corresponding to maximum wavelength of visible light is

A vessel whose bottom has round hole with diameter of 1 mm is filled with water. Assuming that surface tension. acts only at hole, then the maximum height to which the water can be filled in vessel without leakage is (surface tension of water = 7.5 ×10-² Nm-¹ and g = 10ms-² )

The de-Broglie wavelength of an electron, α-particle and proton all having the same kinetic energy is respectively given as λe, λα, and λp. Then which of the following is not true?

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