Q3.in the same medium transverse and longitudinal waves
Answer : Option AExplaination / Solution:
As speed of transverse & longitudinal waves depend on different modulus of elasticity (Young's modulus, Bulk modulus, Modulus of Rigidity) of the medium.
So in the same medium transverse and longitudinal waves
travel with different speeds
Q4.The best method to determine the homozygous and heterozygous of an individual is
Answer : Option AExplaination / Solution:
Homozygous and heterozygous of an individual is determined by test cross method in which homozygous recessive is crossed with F1 hybrid individual.
Q7.Vinegar is obtained from molasses with the help of
Answer : Option CExplaination / Solution:
Vinegar is chemically diluted acetic acid which is produced by fermentation of molasses in presence of yeast and Acetobactor.
Q8.If the polarity of induced emf is such that it tends to produce a current which aids the change in magnetic flux that produced it, which conservation law is violated?
Answer : Option CExplaination / Solution:
In this case we would be obtaining electrical energy continuously without doing any work.
Q10.In various experiments on photo electricity dealing with the stopping potential dependence on frequency of incident radiation , the conclusion was that stopping potential
Answer : Option AExplaination / Solution:
The stopping potential is defined as the potential necessary to stop any electron even the electron with the most kinetic energy from reaching the other plate. Kinetic energy of electron depends on frequency not on intensity of incident radiation.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0