MEDIUM
Earn 100

What is the term for the flat area alongside a river, created by the deposition of sediment during floods?

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Important Questions on Motion in a Plane

EASY
In Raman scattering, Stokes and Antistokes lines respectively represents lines with ______ and ______ wavelength.
HARD
Four electrons, each of mass me are in a one dimensional box of size L. Assume that, the electrons are non-interacting, obey the Pauli exclusion principle and are described by standing De Broglie waves confined within the box. Define α=h28meL2 and U0 to be the ground state energy. Then,
MEDIUM
If the uncertainty in the position of an electron is 10-10 m, then the value of uncertainty in its momentum will be _____ kg ms-1. h=6.62×10-34 J-s
EASY
The stream of a river is flowing with a speed of 2 km h-1. A swimmer can swim at a speed of 4 km h-1. The direction of the swimmer with respect to the flow of the river, to cross the river straight, is
EASY
State the unit and dimensions of coefficient of convection?
MEDIUM
It is hotter at the same distance over the top of a fire than it is on the side of it, mainly because :
EASY
Why convection cannot take place in a solid?
EASY
In a place near the sea, a breeze blows from the sea to the land in the day time but it blows in the opposite direction at night. Why?
MEDIUM
A liquid of mass m and specific heat c is heated to a temperature 2T. Another liquid of mass m2 and specific heat 2c is heated to a temperature T. If these two liquids are mixed, the resulting temperature of the mixture is
EASY
Permanent winds blowing toward the equator are called _____.
EASY

Assertion: It is hotter over the top of fire than at the same distance on the sides.

Reason: Air surrounding the fire conducts more heat upwards.

MEDIUM
Ventilators are provided in rooms just below the roof. Why?
EASY
An ordinary electric fan does not cool the air; still, it gives comfort in summer. Explain.
EASY
Which method of heat transfer depends on gravity?
EASY
In which of the following process, convection does not takes place primarily?
MEDIUM
Trade wind is an example of which of these?
EASY
The equatorial and polar regions of the earth receive unequal solar heat. The convection current arising due to this is called:
HARD
Explain how convection causes trade winds.
HARD
Explain the role of rotation of earth in the movement of trade winds.