## Spring Pendulum - MCQ - Basic Level

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of Basic Level Questions on Spring Pendulum. You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1.  Infinite springs with force constants k, 2k, 4k and 8k…. respectively are connected in series. The effective force constant of the spring will be

•  2k
•  k
•  k/2
•  2048

Q2. A spring has length l and spring constant k. if spring is divided in two equal parts then spring constant is

•  k
•  k/2
•  2k
•  4k

Q3. A mass M is suspended from a spring of negligible mass. The spring is pulled a little and then released so that the mass executes S.H.M. of time period T. If the mass is increased by m, the time period becomes 5T/3. Then the ratio of m/M is

•  5/3
•  3/5
•  25/9
•  16/9

Q4. One-fourth length of a spring of force constant K is cut away. The force constant of the remaining spring will be

•  3/4 K
•  4/3 K
•  K
•  4K

Q5. The force constants of two springs are 1 K and 2 K . Both are stretched till their elastic energies are equal. If the stretching forces are F1 and F2, then F1 : F2 is

•  K1 : K2
•  K2 : K1
•  √K1 : √K2
•  K12 : K22

Q6. When a mass m is attached to a spring, it normally extends by 0.2 m. The mass m is given a slight additional extension and released, then its time period will be

•  1/7 sec
•  1 sec
•  2Ï€/7 sec
•  2/3Ï€ sec

Q7. A mass m attached to a spring oscillates every 2 sec. If the mass is increased by 2 kg, then time-period increases by 1 sec. The initial mass is

•  1.6 kg
•  3.9 kg
•  9.6 kg
•  12.6 kg

Q8. The length of a spring is l and its force constant is k. When a weight W is suspended from it, its length increases by x. if the spring is cut into two equal parts and put in parallel and the same weight W is suspended from them, then the extension will be

•  2x
•  x
•  x/2
•  x/4

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