Saved Bookmarks
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 7751. |
Why 2law called real law of motion |
| Answer» Because by 2nd law we describe 1 and 3 of motion | |
| 7752. |
Please explain the hydraulic brakes? |
| Answer» Hydraulic brakes are very complex mechanism when the brakes are applied there is a hollow tube inside a bigger hollow tube which is filled with air or hydraulic liquid through a strong pressure so when the gap is filled the smaller tube gets out of the bigger tube and strikes with a huge amount of force At the wheel and retardation is achieved | |
| 7753. |
Prove that the height of mountain on earth cannot be more than 10 km? |
| Answer» Elastic limit of earth is 3×10^8N, since pressure exerted by the mountain is balanced by elastic limit of earth so, pgh is less than 3×10^8N/m2, density of mountain (p)=3×10^3kg/m3, so, pgh <3×10^8Nm^-2......3×10^3×10h <3×10^8.....10^4h <10^8N. ..h <10^4m..Therefore h <10000m or h <10km | |
| 7754. |
What is equibrilium |
| Answer» Equilibrium in physics means a situation where net force on the body is 0. | |
| 7755. |
What do we mean by angular velocity |
| Answer» Rate of change of angular position of a rotating body. | |
| 7756. |
if earth contracts to half of its radius, what would be the length of the day? |
| Answer» T\'=T/2 | |
| 7757. |
Work done of spring when it is already stress from its initial position to final position? |
| Answer» W=1/2kx^2 | |
| 7758. |
Difference between stress and strain |
| Answer» Stress is an opposite reaction of pressure of an body inside but strain is the change in shape stress exist without strain but strain never exist without stress | |
| 7759. |
I want to know about projectile motion with definition |
| Answer» | |
| 7760. |
Siunit of density |
|
Answer» Kilogram cubic per meter(kg/m3) Kilogram per cubic metre.kg/m3 |
|
| 7761. |
Prove that distance covered by body in tth sec is D=u+a÷2(2t-1) |
| Answer» Subtract distance covered in (t-1) th sec from distance covered in t th sec by using eqn s=ut+1/2at^2 | |
| 7762. |
Difference between Stress and Strain. |
| Answer» Stress is a force acting on a rock per unit area. It has the same units as pressure, but also has a direction (i.e., it is a vector, just like a force). Strain is a change in shape or size resulting from applied forces (deformation). Rocks only strain when placed under stress. | |
| 7763. |
Prove that newton\'s second law of motion is the real law of motion? |
| Answer» | |
| 7764. |
ABCD is a parallelogram AC AND BD are its diagnosis prove that (i)AC+BD=2BC (ii)AC-BD=2AB |
| Answer» | |
| 7765. |
Who was the scientists that received noble prize twice in physics |
| Answer» Marie curie | |
| 7766. |
Write a relation between weight of a body on moon and weight of body on earth |
| Answer» Weight of earth=1\\6time the weight of moon | |
| 7767. |
Convert 1joule into erg |
| Answer» 10^7 erg | |
| 7768. |
When does a cyclist appear to be stationary with respect to another moving cyclist |
| Answer» when ever speed of both the cyclistsare sam then the cyclist was paper to be stationaryfor other cyclist. | |
| 7769. |
What is the magnitude and direction two vectors acting in same line and direction? |
| Answer» | |
| 7770. |
Example of elasticity |
| Answer» Steel wire comes back to its original shape after the externel force is removed | |
| 7771. |
Define everything about thermodynamics |
| Answer» | |
| 7772. |
Define the term radius of gyration? |
| Answer» Radius of gyration of a body about a given axis is equal to root mean square distance of the constituent particles of a body from given axis of rotation. | |
| 7773. |
Derication |
| Answer» | |
| 7774. |
Is Time Traveling is possible? |
|
Answer» So if Time is relative then it could not be achieved every time accurate and when there will be some mistakes the time will lead us to travel in other dimension Yes. By increasing speed upto the speed of light No, time travelling isn\'t possible becz if we have to go in past or in future we have to rearrange the whole universe which is not possible to human, it is another fact by Einstein that if we travel at light speed the our time get slow but universe is in normal so when we stop we are in future but that is not time travelling we lose the past for future we get in future but we never return to past. ..so, over all its simple time travelling isn\'t possible This was proved by Einstein by in the laws of Relativity According to Einstein time is relative but not absolute |
|
| 7775. |
Syllabus 1st term ka kaise recover kiya jaye sir without tution |
| Answer» You have to give your more time on your self study and have to complete your all syllabus | |
| 7776. |
Define impulse. |
|
Answer» Large force act for a short period of time it is integral of force over a time interval.its symbol is J.it is vector quantity. |
|
| 7777. |
does the centripetal force depends upon the sense of rotation |
| Answer» | |
| 7778. |
Why it is easier to pull a lawn mover rather than push it |
| Answer» When we push a lawn mover a component of applied force acts downward due to which it added to normal r*n so friction f increase that\'s why..... | |
| 7779. |
define parallax. |
| Answer» | |
| 7780. |
What are the information obtained by velocity - time graph |
| Answer» Area under it gives displacement while slope gives acceleration | |
| 7781. |
What is rotational torque of force?Give its SI unit |
| Answer» | |
| 7782. |
What is the cifficient of resitution |
| Answer» It the ratio of the relative velocity of separation to the relative velocity of approach | |
| 7783. |
How the coefficient of friction between a body and a surface change if the mass of body double |
| Answer» Remains constant as it is independent of mass | |
| 7784. |
F is proportional to m and f is proportional to a but why multiply equations f square is no there |
| Answer» | |
| 7785. |
Is there any app in gujarati language? |
| Answer» | |
| 7786. |
Did |
| Answer» | |
| 7787. |
Kepler\'s law |
| Answer» | |
| 7788. |
Newton s law of Gravitation |
| Answer» Newton\'s law of universal gravitation:\xa0Newton\'s law of universal gravitation states that a particle attracts every other particle in the universe using a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. | |
| 7789. |
What is Geostationary satellites? |
| Answer» | |
| 7790. |
Why the center of earth is hot |
| Answer» | |
| 7791. |
Please tell me what is conservative force |
| Answer» A force is conservative if work done by the force in displacing from one point to another is independent of path followed by the particle and depends only end point. | |
| 7792. |
What is circular motion? |
| Answer» The motion possessed by a body when it is moving in a circular plane.. When the motion is in circular path centripetal acceleration is possessed by the body dude | |
| 7793. |
Prove the theorem of parallel axis . |
| Answer» | |
| 7794. |
Can speed of an object be negative.justify |
|
Answer» Speed depend on distance and distance cann\' t be negative so speed is....... no speed cannot be negative because it is a scalar quatity..................but velocity can be negative |
|
| 7795. |
Chapter 14 notes |
| Answer» | |
| 7796. |
Why friction is called a necessary evil? |
|
Answer» If there is no friction nothing can exist If there is no friction nothing can ex |
|
| 7797. |
How many type of vector analysis |
| Answer» 3type triangular, parallelogram, polygonal law | |
| 7798. |
What is meant by physical quantity |
| Answer» A quantity which can be measured physically. | |
| 7799. |
Why are air bubbles dangerous in hydraulic brake systems |
| Answer» becoz u r dangerous | |
| 7800. |
Discuss 2 D elastic collisions |
| Answer» | |