The Quiz

What is the formula of Profit%

What is the formula of CP, in terms of Profit% and SP?

What is 20% of 350

• 55

• 70

• 82

• 20

If the SP of 16 video games is the same as the CP of 20 video games, the dealer incurs

• Gain of 20%

• Loss of 20%

• Gain of 25%

• Loss of 25%

What is the formula of Compound Interest

• None of the options

• CI= PxRxT/100

What is the approximate speed of light in air?

• 1,000m/s

• 200,000m/s

• 300,000,000m/s

• 340m/s

On which of the following surfaces will diffused reflection take place

• A car's rearview mirror

• Chalk Powder

• Plane Mirror

• Polished Marble floor

The focal length of the eye changes due to the action of-

• Pupil

• Cornea

• Iris

• Ciliary Muscles

What lens is used to correct Myopia and Hypermetropia?

• Myopia-Bifocal lens

  Hypermetropia-Focal Lens

• Myopia-Concave Lens

  Hypermetropia-Convex Lens

• Myopia-Convex Lens

  Hypermetropia-Concave Lens

• Both are corrected by surgery

A concave mirror can converge a parallel beam of light to a point. The reflection taking place is a regular reflection

• True

• False

Answer explanation

Regular reflection is a reflection in which all the incident parallel rays will remain parallel after reflection. But in the case of concave mirrors, the parallel beam of light converges and hence it does not reflect parallelly.