The Young’s modulus of steel is twice that of brass. Two wires of same length and of same area of cross section, one of steel and another of brass are suspended from the same roof. If we want the lower ends of the wires to be at the same level, then the weights added to the steel and brass wires must be in the ration of:

A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?

If a plant with green leaves is kept in a dark room with only green light on, which one of the following would we observe?

Two springs are connected to block of mass M placed on a frictionless surface as shown below. If both the springs have a spring constant $$k$$​. the frequency of oscillation of the block is:

Y and Z are two partially reflecting glass sheets, a distance $$l$$​ apart in air. White light falls normally on Y. The light emerging from Z is analysed by a spectrometer. A dark band is observed in the spectrometer at a wavelength. The distance $$l$$​ must be equal to:

If a small displacement of a system from the rest position (after getting some energy) results in a small bounded motion about the equilibrium position, then the system is in

A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?

If a plant with green leaves is kept in a dark room with only green light on, which one of the following would we observe?

Two springs are connected to block of mass M placed on a frictionless surface as shown below. If both the springs have a spring constant $$k$$​. the frequency of oscillation of the block is:

Y and Z are two partially reflecting glass sheets, a distance $$l$$​ apart in air. White light falls normally on Y. The light emerging from Z is analysed by a spectrometer. A dark band is observed in the spectrometer at a wavelength. The distance $$l$$​ must be equal to:

If a small displacement of a system from the rest position (after getting some energy) results in a small bounded motion about the equilibrium position, then the system is in