Question
If the diameter of a sphere is 63 cm, then what is the
total surface area of the sphere?Solution
diameter of sphere =63 radius of sphere =31.2cm now, total surface area sphere =4πr 2 =4×22/7×31.5×31.5 = 4×22/7×992.25 =87318/7 =12474cm2
Which quantity has the same dimensional formula as impulse?
Which physical quantity is conserved in a collision (in the absence of external forces)?
Which of the following has the highest frequency?
Two cars A and B are running at velocities of 60km per hour and 45 km per hour. What is the relative velocity of car A with respect to car B, if both ar...
A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is –
Hyperrnetropia or longsight can be corrected by using :
What is the angle between centripetal acceleration and tangential acceleration?
Which of the following statements is incorrect for a Zener diode in breakdown region?
The stopping potential for photoelectrons emitted from a metal surface when light of frequency 8×1014 Hz is incident is 3 V. What is the wo...
Mirror formula is
Relevant for Exams:
