Subject: Physics, asked on 21/5/18

## ​​A glass tube 1.5 m long and open at both ends is immersed vertically in a water tank completely. A tuning fork of 600 Hz is vibrated and kept at the upper end of the tube and the tube is gradually raised out of water. The total number of resonances heard before the tube comes out of water, taking velocity of sound in air as 330 m/sec is

Subject: Physics, asked on 20/5/18

## Please solve this question Q.5. A block is placed on an inclined plane. The block is moving towards right horizontally with an acceleration ${a}_{0}$ = g. The length of the inclined plane (AC) is equal to 1 m. Whole the situation are shown in the figure. Assume that all the surfaces are frictionless. The time taken by the block to reach from C to A is (Take, g = 10 m/${s}^{2}$) a. 0.74 s b. 0.9 s c. 0.52 s d. 1.24 s

Subject: Physics, asked on 18/5/18
Subject: Physics, asked on 24/4/18

## Solve this: A string in a musical instrument is 50  cm long and its fundamental frequency is  800 Hz. If a frequency of 1000 Hz is to be  produced, the required length of string is :   a. 37.5 cm  b. 40 cm  c. 50 cm  d. 62.5 cm

Subject: Physics, asked on 23/4/18

## Solve this: 57. A uniform string resonates with a tuning fork, at a maximum tension of 32N. Ifit is devided into two segments by placing a wedge at a distance one-fourth of length from one end, then to resonance with same frequency the maximum value of tension for string will be.  (a) 2N                  (b) 4N (c) 8N                  (d) 16N

Subject: Physics, asked on 22/4/18

## Solve this: 49.  When a mass is attached to a spring, its length is increased by 20 cm. It is further lowered and released. The time period of its S.H.M is

Subject: Physics, asked on 22/4/18

## Solve this: 34. A photon of wavelength 900 nm behaves like a particle of mass (A) 5.53 x 10-36 kg            (b) 0 kg (C) 2.46 x 10-36 kg            (d) 1.84 x 10-44 kg

Subject: Physics, asked on 22/4/18

## Solve this :  10. The displacement of a wave is given by the equation  The frequency of the wave is : (a) 30 Hz  (b) 25 Hz  (c) 20 Hz  (d) 15 Hz

Subject: Physics, asked on 21/4/18

## Solve this: 41. A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 MHz. The speed of sound in a tissue is 1.7 km/s. The wavelength of sound in the tissue is close to

Subject: Physics, asked on 21/4/18

## Solve this: 31. A sample pendulum executing SHM has a period T and amplitude A. Its peed, when at a distance A/4 is

Subject: Physics, asked on 21/4/18

## Solve this: 26. For a certain gas the ratio of specific heat is 1.5, for this gas.

Subject: Physics, asked on 20/4/18

## Solve 66: 66. 56 tuning forks are arranged in a series that each fork gives 4 beats per second with previous one. The frequency of last fork is 3 times that of first. Then frequency of first fork is.  (a) 52 Hz               (b) 56 Hz (c) 60 Hz               (d) 110 Hz

Subject: Physics, asked on 20/4/18

## Solve 54: 54. If  find the vector having the same magnitude as $\stackrel{\to }{B}$ and parallel to $\stackrel{\to }{A}$ .

Subject: Physics, asked on 18/4/18
Subject: Physics, asked on 31/3/18

## pls give answer using simple steps Q.16. A hollow cylinder of small radius is rolling without slipping down on a movable inclined wedge of inclination of angle $\theta$ = 45$°$. The cylinder and wedge are having the same mass. The wedge velocity when the cylinder reaches its bottom is A) 0.5 m/s B) 1 m/s C) 1.5 m/s D) 2 m/s

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