Motion Class 9 | गति | Gati | Motion Explanation in Hindi | NCERT | Top Questions | Ch 8 | Doubtnut

त्वरण (Accelleration)|गति के समीकरण (Equations of Motion)|Equation of Motion Under Gravity|Questions|One Minute Revision

Motion Under Gravity Explained In Hindi | Explained With Examples | Class 11 Physics

Class 11 NEET 2020 - Revision In 60 Days | Circular Motion - Quick Revision | NEET Physics | Important Questions

Rakesh and Rajesh are 8th class students. They are fond of watching cricket match, particularly when it is played between Australia and India. They observed that most of the players, when they are in the field, apply a cream on their face. They did not know its reason. One day they asked this question to their teacher. The teacher thought it to be a good question and explained the reason for applying this cream to the whole class. Based on this paragraph, answer the following questions: (i) In your opinion, what explanation did the teacher offer to the students in the class? (ii) Why is small ozone layer on top of the stratosphere considered crucial for human survival? (iii) Write any two values displayed by Rakesh and Rajesh and their class teacher?

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion In projectile motion, the rate of change in magnitude of potential energy of a particle first decreases and then increases during motion. Reason In projectile motion, the rate of change in linear momentum of a particle remains constant during motion.

A situation is shown in which two objects A and B start their motion from same point in same direction. The graph of their velocities against time is drawn. u_A and u_B are the initial velocities of A and B respectively. T is the time at which their velocities become equal after start of motion. You cannot use the data of one question while solving another question of the same set. So all the questions are independent of each other. 7. After 10 s of the start of motion of both objects A and B, find the value of velocity of A if u_A = 6 ms^-1 , u_B = 12 ms^-1 and at T velocity of A is 8 ms^-1 and T = 4s

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion An object A is dropped from the top of an incline at t=0, as shown. It will fall under gravity as indicated by the arrow. At the same time, i.e., t=0, another object B begins to slide down the frictionless incline. The two objects during their motion to the ground level will be travelling at equal speeds. Reason Net force on both the objects during their motion is same.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion Force applied on a block moving in one dimension is producing a constant power,then the motion should be uniformly accelerated. Reason This constant power multiplied with time is equal to the change in kinetic energy.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion If a force is applied on a rigid body. Body is in motion but point of application of force is stationary. Then, work done by the force is zero. Reason If body is moving, then point of application of force should also move.

For recruiting Management Trainees in an organisation, thefollowingcriteriahavebeenlaiddown. The candidate must: (A) be a first class graduate in Commerce with at least 65% marks. (B) have secured at least 70% marks in SSC. (C) be not more than 26 years and not less than 21 years of age as on 1.8.2007. (D) have secured at least 60% marks in selection test. (E) have secured at least 50% marks in selection interview. However, if a candidate fulfils all the above mentioned criteria EXCEPT- (i) at (A) above but is an Economics graduate with at least 70% marks, the case may be referred to the GM of the organisation. (ii) at (E) above but has secured at least 40% marks in selection interview and at least70% marksin selection test, the case may be referred to the President of the organisation. In each of the questions below, information of one candidate is given. You have to take one of the following five dedsions based on the information provided and the criteria and conditions given above. You are not to assume any thing other than the information provided in each question. All these cases are given to you as on 1.08.2007. You have to indicate your dedsion by marking answers to each question as follows: Radhika has passed BA examination with specialisation in Economics securing 76% marks and first class. She had topped her class in SSC examin~tion with 82% marks. She has completed 24 years of age on 25th May, 2007. She cleared the selection test with 66% marks and the selection interview with 54% marks.