Question
The distance between the focus and the centre of
curvature of a spherical mirror in terms of the radius of curvature R, is equal to:Solution
: The distance between the principal focus and the center of curvature of the convex mirror is equal to R/2.
Select the number that can replace the question mark (?) in the following series. 17, 21, 30, 46, 71, ?
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2200 after 4 years. If the same amount is investe...
If 3792 = 39 and 7242 = 22, then 2958 = ?
Read the directions carefully and answer the following question.
Select the correct combination of mathematical signs that can sequentially rep...
If the positions of the second and the third digit of each of the numbers are interchanged, how many odd numbers will be formed?
If each of the letters in the English alphabet is assigned odd numerical value beginning A = 1, B = 3 and so on, what will be the total value of the let...
Select the option in which the numbers are related in the same way as the numbers of the following set.
(25, 18, 225)
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.
Select the set in which the numbers are related in the same way as are the numbers of the following set.
(4, 152, 6)
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