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0
votes
Getting burnt by steam is less dangerous than boiling water. True or False?
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
Two spheres, A & B, are made up of the same material. The radius of A is twice that of B, while the temperature of A is half that of B. What is their ratio of energy emitted per unit time (EA : EB)?
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
The variables like pressure, volume, temperature of a thermodynamic system are microscopic. True or False?
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
Select the correct statement.
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
Which law of thermodynamics says that efficiency of a heat engine cannot be 1?
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
What is a quasi-static process?
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
physics
0
votes
Let T1 be the time period of a single spring mass system on a horizontal surface. Let T2 be the time period of the same system when hung from the ceiling. What is the expression for T1 & T2?
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
A spring mass system is hanging from the ceiling of a lift. It has been like this for quite some time. Suddenly the cables holding the lift are cut.
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
A function has the equation Acos3t + Bsin3t. Find the value of time period.
answered
Oct 4, 2021
in
Class-XI-PHYSICS
cbse
0
votes
Consider the damped SHM of a spring mass system. If the time taken for the amplitude to become half is âTâ, what is the time taken for mechanical energy to become half?
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
The value of gravitational potential inside a uniform thin spherical shell is the same everywhere.
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
The escape velocity of an object from the surface of the planet does not depend on the mass of the object.
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
The earth is able to retain its atmosphere because of _____
answered
Oct 3, 2021
in
Class X
cbse
0
votes
The time period of a satellite is independent of the mass of the satellite.
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
The only natural satellite of India is the moon.
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
The PSLV rockets of India launch satellites into the high-earth orbit.
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
A partially elastic body can never be permanently deformed. True or False?
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
What does the area under the stress-strain curve represent?
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
The SI unit of pressure is _____
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
0
votes
Pressure is a vector quantity. True or False?
answered
Oct 3, 2021
in
Class-XI-PHYSICS
cbse
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