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Recent questions tagged cbse
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cbse
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Q: 100 gk questions for class 1
asked
Aug 27, 2022
in
Class X
by
Robin
gk-questions
questions
cbse
class-1
0
votes
Q: The value of the gravitational potential at the centre of a ring of radius “a” and mass “M” is _____ (a) zero (b) -(G*M)/a (c) -(G*M)/a^1/2 (d) infinite
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: An object is projected vertically upwards with a velocity (gr) ^1/2. What is the maximum height reached by the object if “R” is the radius of the earth and “g” is the acceleration due to gravity?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: A planet as a radius “R” and density “P”. The escape velocity of this planet is _____
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: A wire with a radius of 5mm is hung freely from the ceiling. A load of 5N is applied to its free end. Find the elongation in the wire if its volume is 7.85*10^-5m^3 &
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: What is Pascal’s Law?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: The speed of efflux, in case of a tank with a hole at the bottom, depends upon which of the following factors? Assume that the area of the tank is > > area of hole.
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: A steel and a copper bar are joined end to end. The area of the steel bar is half the area of the copper bar. Their lengths are equal to 10cm each.
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: What is the net amount of energy per unit time being received by a body having a temperature of 40 °C in a surrounding of 60°C?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: If we hold a metal rod from one end and dip the other in a source of fire, what will happen to the temperature of the rod at steady state?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: Zeroth law of thermodynamics helped in the creation of which scale?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: A carnot engine extracts 1200J of energy from a hot reservoir. What is the amount of work done by it? Temperatures of hot and cold reservoirs are 200K and 150K respectively.
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: Which of the following states of matter has the maximum value of mean free path?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: A force given by: F = -2(x – 1)^2acts on a particle at rest. Select the correct option regarding the same. (a) Force acts on particle along the positive x direction (b) Force is never zero
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: What is the time period of kinetic energy of a particle in SHM,if the time period of SHM is 4s?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: All waves require material for propagation. True or False?
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: A string has a mass of 100gm & is under a tension of 10N. What should be its length if the speed of transverse waves is to be 10m/s on the string.
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: Why is the speed of longitudinal waves sound in solids greater than that in liquids?
asked
Oct 7, 2021
in
Class X
by
Sandeepthukran
cbse
0
votes
Q: The escape velocity for an object to leave the surface of the earth does not depend on its size, shape, mass or direction of projection of the body. (a) True (b) False
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
0
votes
Q: Gravitational potential energy can be zero but gravitational potential can never be zero. (a) True (b) False
asked
Oct 7, 2021
in
Class-XI-PHYSICS
by
Sandeepthukran
cbse
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