List of practice Questions

The magnetic field of a plane electromagnetic wave is given by: \[ \vec{B} = 2 \times 10^{-8} \sin \left(0.5 \times 10^3 x + 1.5 \times 10^{11} t \right) \hat{j} \, {T}. \] {The amplitude of the electric field would be:}
The magnetic moment of an electron (e) revolving in an orbit around nucleus with an orbital angular momentum is given by:
The recoil speed of a hydrogen atom after it goes from \( n = 5 \) state to \( n = 1 \) state will be:
The root mean square speed of smoke particles of mass \( 5 \times 10^{-17} \) kg in their Brownian motion in air at NTP is approximately. (Given \( k = 1.38 \times 10^{-23} \, {JK}^{-1} \))
The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10A to 25 A in 1s, the change in the energy of the inductance is:
Two light beams of intensities in the ratio of 9 : 4 are allowed to interfere. The ratio of the intensity of maxima and minima will be:
When you walk through a metal detector carrying a metal object in your pocket, it raises an alarm. This phenomenon works on:
Which is deflected by the magnetic field?
Which of the following figure represents the variation of \( \ln \left( \frac{R}{R_0} \right) \) with \( \ln A \) (If \( R \) is the radius of a nucleus and \( A \) is its mass number)?
Zener breakdown occurs in a p − n junction having p and n both:
Filtration of blood during urine formation takes place in
The most abundant type of WBC cells
In which month of gestation, the first movements of foetus and appearance of hair ion its head is observed?
The testis are situated outside the abdominal cavity in scrotum as it helps to
One of the 2000 years old viableseed,discovered during the archeological excavation an King Herold’s near dead sea.
Typical mature embryosac of angiosperm is
The ovule of angiosperm is technically known as
Stalk of the Stamen is
An example of dioecious plant
Menstrual cycle exhibited by
Phycoerythrin and Floridean starch is found in
The animals which are active during day time:
Maintenance of constant internal environment is called as
Cuscuta is an example of
The amount of Photosynthetically active radiation captured by plants is