Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

MEDIUM

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Which of the following is a climatic feature associated with the monsoon season in India?

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Important Questions on Oscillations

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

The weight suspended from a spring oscillates up and down. The acceleration of weight will be zero at

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

A particle is performing SHM starting from extreme position. Graphical representation shows that, between displacement and acceleration, there is a phase difference of

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

A particle of mass

m

is moving along the

x - a x i s

under the potential

V (x) = \frac{k x^{2}}{2} + \frac{λ}{x^{'}}

where

k

and

x^{'}

are positive constants of appropriate dimensions. The particle is slightly displaced from its equilibrium position. The particle oscillates with the angular frequency

(ω)

given by

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

For a particle performing linear SHM, its average speed over one oscillation is (

A =

amplitude of S.H.M.,

n =

frequency of oscillation)

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

A simple pendulum of length

L

has mass

M

and it oscillates freely with amplitude

A

. At the extreme position, its potential energy is (

g

= acceleration due to gravity)

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

The mean deviation from the mean of the set of observations,

- 1, 0, 4

is

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

State the unit and dimensions of coefficient of convection?

MEDIUM

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

It is hotter at the same distance over the top of a fire than it is on the side of it, mainly because :

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

Why convection cannot take place in a solid?

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

Explain why felt rather than air is used for thermal insulation even though the thermal conductivity of air is less than that of felt?

MEDIUM

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

A liquid of mass m and specific heat c is heated to a temperature 2T. Another liquid of mass

\frac{m}{2}

and specific heat 2c is heated to a temperature T. If these two liquids are mixed, the resulting temperature of the mixture is

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

Permanent winds blowing toward the equator are called _____.

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

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

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

Ventilators are provided in rooms just below the roof. Why?

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

An ordinary electric fan does not cool the air; still, it gives comfort in summer. Explain.

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

Which method of heat transfer depends on gravity?

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

In which of the following process, convection does not takes place primarily?

MEDIUM

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

Trade wind is an example of which of these?

EASY

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

The equatorial and polar regions of the earth receive unequal solar heat. The convection current arising due to this is called:

HARD

Physics>Oscillations and Waves>Oscillations>Simple Harmonic Motion

Explain how convection causes trade winds.