ans

One end of a string is free and the other end is fixed. If 2 consecutive resonance frequencies are 270 Hz and 330 Hz then what is the frequency of the 7th harmonic ?

Assertion(A): The corpus luteum secretes progesterone during the luteal phase of the menstrual cycle.
Reason(R): Progesterone stimulates ovulation during the menstrual cycle.

Assertion (A): The inadequacy of the secretion of oxytocin may interfere with the process of parturition.
Reason (R): Oxytocin is a peptide hormone synthesised and secreted by pituitary gland.

Assertion - Weighing machine measures only the weight of the body not mass

Reason - Weightlessness means absence of weight

Path length of 2 sound waves is 114 mm and velocity of sound is 342 m/s. Find the number of frequencies of tuning fork for which the observer(person) will hear max intensity -

Two particles oscillating along 2 close parallel straight lines are at a distance of +A/√2 and -A/√2 each from the mean position moving towards mean position in opposite directions. What is the phase difference between them ?

1. According to Laplace correction, velocity of sound in air is given by √(gamma*B)/√density...where B= bulk modulus and gamma= adiabatic constant
2. If a particle is executing shm with a Time period of T then the Time period of it's Total energy is T/2

𝘞𝘩𝘢𝘵 𝘪𝘴 𝘯𝘢𝘵𝘶𝘳𝘦 𝘰𝘧 𝘵𝘩𝘦 2 𝘴𝘵𝘳𝘢𝘯𝘥𝘴 𝘰𝘧 𝘢 𝘋𝘕𝘈 𝘥𝘶𝘱𝘭𝘦𝘹

A particle moving on x axis has potential energy, U=6+x²-4x J. The particle is released at x=-2 m. The maximum value of x will be-

Urge of drinking are not under the control of centres located in medulla oblongata

Fascia is a collagenous connective tissue

Volvox is filamentous algae.

A particle is executing SHM with time period T. If it is released then time taken by it to complete 7/8 oscillations is-

Gymnosperm do not have living cell without neucleus

Y plus batch question =

𝘚𝘵𝘢𝘵𝘦𝘮𝘦𝘯𝘵 = Mass of a body must be present physically at COM

In a neuron the vesicles containing neurotransmitters are called =

If we change the volume then equilibrium constant of the rxn

H₂ + I₂ = 2HI should be change

★ A bullet of mass M moving vertically upward with a velocity u hits a hanging block of mass M and gets embedded in it .

The height through which block rises after collision ( assume sufficient space present above block ) =