541 Mark the wrong statement ? Physics Medium Full question → A a frame of reference which is either at rest or moves with a constant velocity is called an inertial frame of reference B an un-accelerated frame of reference is called an inertial frame of reference C all the frames of reference in uniform rectilinear motion are equivalent D Newtons laws of motion are valid in an accelerated (non inertial) frame of reference
542 0.001 kg mass will be equivalent to_________________? Physics Medium Full question → A 2.50 GWh B 25.00 GWh C 0.26 GWh D 250 GWh
543 Which one of the following radiations has the strongest photon? Physics Medium Full question → A T.V waves B Microwaves C X-rays D γ-rays
544 The relativistic energy E is equivalent to relativistic mass given by_______________? Physics Medium Full question → A Ec2 B E/c2 C E/c D c2/E
545 The energy absorbed by a body is __________________ at resonance? Physics Medium Full question → A Maximum as well minimum B Minimum only C Maximum only D 0
546 In case of a simple pendulum, the cause of damping is__________________? Physics Medium Full question → A Drag force of air B Gravity C Tension in the string D None of these
547 A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ? Physics Medium Full question → A None B 1 C 2 D 3
548 The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________? Physics Medium Full question → A 10 cm B 5 cm C 15 cm D 7.5 cm
549 For a simple pendulu,m the restoring force is caused by________________? Physics Medium Full question → A Gravity B Spring C Hand D All of these
550 Displacement of the body in S.H.M is equal to amplitude when the body is at_______________? Physics Medium Full question → A Mean position B Elsewhere C Extreme position D None
551 The projection of the particle moving in a circle with non-uniform speed executes ? Physics Medium Full question → A S.H.M B Vibratory motion C Both B and D D None S.H.M
552 The velocity of the mass attached to a spring is maximum at_______________? Physics Medium Full question → A Mean position B Extreme position C Both A and B D None
553 At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________? Physics Medium Full question → A Increase B Decrease C Remains the same D Is zero
554 The mass attached to a spring executes ? Physics Medium Full question → A Vibratory motion B Rotatory motion C S.H.M D Both A and C
555 Forced vibration is known as_____________________? Physics Medium Full question → A Simple harmonic vibration B Natural vibration C Driven harmonic vibration D Free vibration
556 In damped harmonic oscillation which one decreases ? Physics Medium Full question → A Amplitude of vibration B Energy of vibration C Both amplitude and energy D Neither amplitude nor energy
557 When K.E energy of SHM is maximum its__________________? Physics Medium Full question → A P.E is zero B Acceleration is zero C Restoring force is zero D All P.E acceleration and restoring force are zero
558 Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________? Physics Medium Full question → A Amplitude B Square of the amplitude C 2 x amplitude D 4 x amplitude
559 Electrical resonance is observed in_______________? Physics Medium Full question → A Radio B Microwave oven C Both in radio and microwave oven D Neither in radio nor in a microwave oven
560 The natural frequency of simple pendulum depends upon_______________? Physics Medium Full question → A It’s mass B It’s length C Square of its length D The square root of its length