दो गेंदों को एक ही बिंदु से क्रमशः 30° और 60° के प्रक्षेपण कोणों पर प्रक्षेपित किया जाता है। यदि वे समान अधिकतम ऊंचाई प्राप्त करती हैं, तो उनके प्रक्षेपण वेगों का अनुपात है:

Which of the following forces is/are responsible for the sedimentation of particles during centrifugation?

Which of the following forces always opposes the applied motion or force?

Statement: An object of mass M falls freely under gravity, maintaining a constant acceleration. Conclusion I: The velocity of the object increases uniformly with time. Conclusion II: The acceleration of the object depends on its mass. Choose the correct option: