Describe Calvin cycle and its regulation.
See Answer →Explain photosynthetic apparatus.
See Answer →Describe the chemiosmotic theory.
See Answer →Give an account of vacuoles and their functions.
See Answer →A progressive wave is described by$
Determine its direction of propagation and calculate the amplitude, wave number, wavelength and frequency of the wave.
Restoring and frictional forces of magnitudes kx and , respectively act simultaneously on an object of mass
attached to a spring. Under the influence of these forces, the mass oscillates with a frequency
and its amplitude reduces to half in
. Calculate the damping constant
, the force constant k and the damping factor b. Also write the differential equation for the system.
Two collinear harmonic oscillations, each of frequency , have amplitudes, a1 and a2 and initial phases,
and
, respectively. Show that, when these oscillations are superposed, the amplitude of the resultant motion is equal to (a1 - a2). What will be the value of the resultant amplitude when
and
.
An object undergoes SHM with frequency . The initial displacement is
and the initial velocity is
. Calculate the amplitude, maximum velocity and maximum acceleration of the object.
Given that the time period of Halley's comet is , calculate the length of its semi-major axis. If the perihelion distance of the orbit is
, calculate the aphelion distance.
A particle A of mass moving along the x-axis with speed
collides elastically with a particle B of equal mass which is initially at rest. After the collision, particle A moves at an angle of
above the x-axis. Calculate the velocities of the two particles after the collision.
A uniform disk of mass and radius
is initially at rest on a frictionless vertical axle. A constant tangential force of
is applied at the edge of the disk for
. Determine the i) the angular acceleration of the disk ii) the angular speed after
iii) the angular momentum of the disk after
, and iv) the rotational kinetic energy after
.
A block of mass is moved up from the base a rough inclined plane making an angle of
with the horizontal with initial speed
. The coefficient of kinetic friction between the block and the plane is 0.2. Calculate
i) the maximum distance the block travels up the incline before coming to rest.
ii) the speed of the block when it returns to the base of the inclined plane.
iii) the energy lost over the entire motion. Take .
A girl of mass stands in an elevator. Obtain the force which the floor of the lift exerts on the girl
i) when the lift has an upward acceleration of ; ii) when the lift is rising at constant speed and iii) when the lift has a downward acceleration of
. Draw the free body diagram. Take
.
An person jumping from a height of
hits the ground with a speed of nearly
. Calculate the impulse experienced by the person during the collision with ground and the average force exerted on the person, if the collision with the ground lasts for
.
The maximum speed with which a car can make a turn in a circular path is
. The radius of the circle in which the car is turning is
. Determine the force of friction being exerted upon the car and the coefficient of friction between the car and the road. Take
.
A curve is described by the following parametric equations
Determine the unit tangent vector to the curve at the point .
Three vectors ,
and
satisfy the condition
. If
and
determine the value of
.
A uniform plane wave of travelling in free space strikes a large block of a material having
,
and
normal to the surface. If the incident electric field vector is given by
$
write the complete expressions for the incident, reflected and transmitted field vector