What phenomenon occurs when the angle of incidence exceeds the critical angle?
Total internal reflection occurs when the angle of incidence is greater than the critical angle, causing the light to be completely reflected back into the medium rather than refracting.
Three circles each of radius 5 cm touch one another. The area (in cm²) subtended between them.
The diagonal of the floor of a rectangular closet is 7.5 ft. The shorter side of the closet is 4.5 ft.
What is the area of the closet in square feet?
If the brick size is 25 cm×12 cm×9 cm, then how many bricks are required to construct a wall of length 10 m, breadth 22.5 cm and height 6 m?
Each side of square ‘A’ is 5 cm less than that of square ‘B’. The perimeter of a rectangle is 2 times the difference of the perimeters of the tw...
Perimeter of a square is equal to the perimeter of a circle that is 704 cm. Find the ratio of the side of the square to the radius of the circle.
The volume of cone is 1597.2 cm3. If its height is 1.4 cm then find the radius of the cone.
In a rectangular floor of length and breadth of 21 metres and 4 metres, respectively, square tiles each of 2 metre edge length are to be laid. If the co...
The ratio of length to breadth of a rectangle is 5:6. If the sum of the length and breadth of the rectangle is 44 cm, then find the area (cm2...
Mohini's Biology test had 250 questions i.e. 20 Macromolecules, 60 Homeostasis and 70 Immunology questions. Although she answered 70% of the Macromolecu...
The speed of two railway engines is in the ratio 5: 4. If they move on parallel tracks in the same direction and if the slower engine is ahead of the f...
