Explore topic-wise MCQs in Physics.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

A thin prism with an angle of 3o and made from glass of refractive index 1.15 is combined with another prism made from glass and has a refractive index of 1.45. If the dispersion were to occur without deviation then what should be the angle of the second prism?

A. 3<sup>o</sup>
B. 0<sup>o</sup>
C. 1<sup>o</sup>
D. 2<sup>o</sup>
Answer» D. 2<sup>o</sup>
Discussion
2.

Calculate the dispersive power of crown glass where V=1.456 and R=1.414.

A. 0.0096
B. 0.45
C. 0.96
D. 0.096
Answer» E.
Discussion
3.

The Refractive index and wavelength are directly proportional to each other.

A. True
B. False
Answer» C.
Discussion
4.

What is the condition for dispersion without deviation?

A. - =0
B. + =0
C. <sup> </sup>=0
D. ( frac { delta}{ delta^{ }} )=0
Answer» C. <sup> </sup>=0
Discussion
5.

Pick out the formula for dispersive power from the following.

A. Dispersive power = ( frac {mean , deviation}{angular , dispersion } )
B. Dispersive power = mean deviation * angular dispersion
C. Dispersive power = mean deviation + angular deviation
D. Dispersive power = ( frac {angular , dispersion}{mean , deviation} )
Answer» E.
Discussion
6.

What is the difference in a deviation between any two colors called?

A. Linear dispersion
B. Angular dispersion
C. Mean deviation
D. Mean dispersion
Answer» C. Mean deviation
Discussion
7.

The Refractive index of a material of a prism is different for different colors.

A. True
B. False
Answer» B. False
Discussion
8.

Which of the following is Cauchy s formula?

A. =A+B <sup>2</sup>+C <sup>4</sup>
B. =A+ ( frac {B}{ lambda^2} + frac {C}{ lambda^4} )
C. =A+B+CB
D. =A+ ( frac {B}{ lambda}+ frac {C}{ lambda^2} )
Answer» C. =A+B+CB
Discussion
9.

Identify the prism formula from the following.

A. = u2061 ( frac {sin [ frac {A delta_m}{2} ] }{ sin u2061( frac {A}{2}) } )
B. = u2061 ( frac {sin [ frac {A + delta_m}{4} ] }{ sin u2061( frac {A}{2}) } )
C. = u2061 ( frac {sin [ frac {A + delta_m}{2} ] }{ sin u2061( frac {A}{2}) } )
D. = u2061 ( frac {sin [ frac {A + delta_m}{2} ] }{ cos u2061( frac {A}{2}) } )
Answer» D. = u2061 ( frac {sin [ frac {A + delta_m}{2} ] }{ cos u2061( frac {A}{2}) } )
Discussion
10.

What is the angle between the incident ray and the emergent ray in a prism called?

A. Angle of deviation
B. Angle of refraction
C. Angle of reflection
D. Angle of dispersion
Answer» B. Angle of refraction
Discussion