JEE Advanced 2013 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other. Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f₁. An observer in the other vehicle hears the frequency of the whistle to be f₂. The speed of sound in still air is V. The correct statement(s) is(are)

If the wind blows from the observer to the source, f₂ > f₁.

If the wind blows from the source to the observer, f₂ > f₁.

If the wind blows from the observer to the source, f₂ < f₁

If the wind blows from the source to the observer, f₂ < f₁.

JEE Advanced 2013 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

A horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation

y(x, t) = (0.01 m) sin[(62.8 m^$$-$$1)x] cos[(628 s^$$-$$1)t]

Assuming $$\pi$$ = 3.14, the correct statement(s) is(are)

The number of nodes is 5.

The length of the string is 0.25 m.

The maximum displacement of the mid-point of the string, from its equilibrium position is 0.01 m.

The fundamental frequency is 100 Hz.

IIT-JEE 2009 Paper 2 Offline

MCQ (More than One Correct Answer)

-2

Under the influence of the Coulomb field of charge +Q, a charge $$-$$q is moving around it in an elliptical orbit. Find out the correct statement(s):

The angular momentum of the charge $$-$$q is constant.

The linear momentum of the charge $$-$$q is constant.

The angular velocity of the charge $$-$$q is constant.

The linear speed of the charge $$-$$q is constant.

JEE Advanced Subjects