Question
A prism has a refractive index of 1.5 and a refracting
angle of 60°.One of its refracting faces is polished to act like a mirror. A monochromatic beam of light is incident on the other face. For the light beam to retrace its path , the angle of incidence at the first face should be:Solution
Given:
- Refractive index of prism, μ=1.5
- Refracting angle of prism, A= 60°
- One refracting face is silvered (acts like a mirror).
- A monochromatic beam is incident on the other refracting face .
Select the missing number from the given responses.
15 Select the number from among the given options that can replace the question mark (?) in the following series.
24, 48, 51, 204, 209, ?
Select the number from the given option that can replace the question mark [?] in the following series.
515, 517, 520, 525, 532, 543, 556, ?
Find the missing term :
...
In the following question, select the missing number from the given alternatives.
45, 15, 60, 75, 135, ?
- Study the given pattern carefully and select the number that can replace the question mark [?] in it.
First row: 10, 6, 964
Second row: 7, 3... Select the number from among the given option that can replace the question mark (?) in the following series.
4, 21, 86, 261, 526, ?
Find the missing number by analysing the pattern followed by the numbers in each row.
Study the given matric carefully and select the number from among the given options that can replace the question mark (?) in it.
Â
M/14 : O/12 : : U/6 : ?
Relevant for Exams:
