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CBSE->Plus 1 Computer Science Questions

Total Questions 228
Show that the points (1,-1), (-1,1), and (?3,?3) when joined together form an equilateral triangle.
Which constant should be added and subtracted to solve the quadratic equation 4x²-?3x-5=0 by the method of completing the squares?
a wave travelling along a string is described by y=0.005sin(80x-3t) in which the constants are in SI unit. calculate the amplitude , wavelength , time period and freequency of the wave.
a steel wire 0.72m long has a mass of 5*10^-3 kg. if the wire is under tension of 60 newton , what is the speed of transverse waves on the wire?
a radio station broadcasts its program at 219.3m wavelength. determine the frequency of ratio waves if velocity of ratio waves is 3 X 10^8 m/s.
how to find the roots of a third degree equation?
Please explain how to make a mathematics still model with the help of an example.
the radii of two planets are R and 2R respectively. and their densities are A and A/2 respectively. what is the ratio of acceleration due to gravity at their surfaces?
Find the radius of gyration and moment of inertia of a rod of mass 100 g and length 100 cm about an axis passing through its center and perpendicular its length.
Please explain on the topic 'Gadgil report' on Western Ghats.
how to find out the number of isomers for a given hydrocarbon.
How to get the root of a negative integer?
Please describe to me about the current issue regarding Western Ghats and how we can protect it. Also list some measures to protect the environment.
WRITE A PROGRAM TO READ A POSITIVE INTEGER THEN PRINT THE NO. OF DIGITS IN 125.
WRITE A PROGRAM TO READ n ELEMENTS OF AN ARRAY AND PRINT ONLY THE EVEN ELEMENTS.
WRITE A PROGRAM TO GENERATE THE FOLLOWING PATTERN. 1 121 12321 1234321 123454321
Explain the steps to draw tangents to a circle .
Sir, please give a short description on 'Vinayak Damodar Savarkar'. Also highlight some of the memorable incidents of him.
who invented mobile phones?
What is organic chemistry