Question
Ratio of monthly income to monthly expenditure of A is
11:9, respectively and monthly savings of A is Rs. 2880. Find the monthly income of A.Solution
Let, monthly income and monthly expenditure of A is Rs. 11x and Rs. 9x respectively. So, monthly savings of A = 11x – 9x = Rs. 2x And, 2x = 2880 x = 1440 So, monthly income of A = 11 × 1440 = Rs. 15840
The resistance of a wire is 10 Ω. What will be its resistance if its length is tripled? (Assume uniform cross-sectional area)
A block of mass 2kg is pushed against a light spring of spring constant 200N/m and compressed by 0.2m on a horizontal surface with kinetic friction coe...
The energy that can harness heat stored below the earth's surface is known as –
What type of lens is used to correct myopia (shortsightedness)?
A beam of light consisting of two wavelengths, 600 nm and 420 nm, is used to obtain interference fringes in a Young’s double-slit experiment. Find...
What is the acceleration due to gravity on the Moon?
The wave nature of matter was proposed by:
What is the wavelength of light having frequency 6 × 10¹⁴ Hz? (Speed of light = 3 × 10⁸ m/s)
The reason for a swimming pool to appear less deep than the actual depth is –
How long does an image remain on the retina after the object is removed?
Relevant for Exams:
