Recent questions in Olympiad-Science

The relation between wavelength, velocity and frequency of sound waves is given by

asked Oct 31, 2017 by priyanka.c

1 answer

An object moving with a speed greater than the speed of sound is said to have

asked Oct 31, 2017 by priyanka.c

1 answer

Which of the following increases as wavelength decreases if the velocity remains a constant.

asked Oct 31, 2017 by priyanka.c

1 answer

Which of the following statements are true? 1. Frequency of the vibration of a particle is defined as number of vibrations completed by the particle in one second. 2. Wave motion is the sort of disturbance which travels through the medium. 3. Velocity of sound in dry air is grater than the velocity of sound in moist air 4. Seismic waves are examples of mechanical waves

asked Oct 30, 2017 by priyanka.c

1 answer

The pitch of a wave depends upon its

asked Oct 30, 2017 by priyanka.c

1 answer

The frequency of a sound wave

asked Oct 30, 2017 by priyanka.c

0 answers

An object of mass 30 kg displaces a liquid that weights 300 N when placed inside the liquid. Will the object float or sink?

asked Oct 30, 2017 by priyanka.c

1 answer

Submarines are built in accordance with

asked Oct 30, 2017 by priyanka.c

0 answers

If the speed of an object doubles then its kinetic energy

asked Oct 30, 2017 by priyanka.c

1 answer

Two people A and B carry some load from the road to the roof of the bus. A takes 1 min and B takes 2 minutes to do the same job. Who has done more work A or B?

asked Oct 30, 2017 by priyanka.c

1 answer

A body covers a distance of x meters along a circular path. The ration of the distance to that of displacement is

asked Oct 30, 2017 by priyanka.c

1 answer

What causes the change in mechanical energy to thermal energy?

asked Oct 30, 2017 by priyanka.c

1 answer

Newton's third law is also called as

asked Oct 30, 2017 by priyanka.c

1 answer

The total amount of kinetic and potential energy of a system is called

asked Oct 30, 2017 by priyanka.c

1 answer

An object falls off a height of 3m does a work of 147 Joules. Then the mass of the box is

asked Oct 30, 2017 by priyanka.c

1 answer

An object rolling down an inclined plane with a velocity of xm/s, then its acceleration is

asked Oct 30, 2017 by priyanka.c

1 answer

Which of the following does not require direction

asked Oct 30, 2017 by priyanka.c

1 answer

The kinetic energy of a substance is due to the _______ of the atoms contained in it.

asked Oct 30, 2017 by priyanka.c

1 answer

Read the following passage and answer the question given below A transvers wave motion is that wave motion in which individual particles of the medium execute simple harmonic motion about their mean position in a direction perpendicular to the direction of propagation of wave motion. A transverse wave travels through the medium in the form of crests and troughs. The distance between two consecutive crests or two consecutive trough is called wavelength of the wave. It is represented by λ. A longitudinal wave motion is that wave motion in which the individual particles of the medium execute simple harmonic motion about their mean position along the same direction, along which the wave is propagated. A longitudinal wave travels in the form of compressions and rarefactions. The distance between two compressions or rarefactions is the wavelength of the wave. QUESTION : Transverse waves cannot be produced in liquids and gases why?

asked Oct 30, 2017 by priyanka.c

1 answer

Read the following passage and answer the question given below A transvers wave motion is that wave motion in which individual particles of the medium execute simple harmonic motion about their mean position in a direction perpendicular to the direction of propagation of wave motion. A transverse wave travels through the medium in the form of crests and troughs. The distance between two consecutive crests or two consecutive trough is called wavelength of the wave. It is represented by λ. A longitudinal wave motion is that wave motion in which the individual particles of the medium execute simple harmonic motion about their mean position along the same direction, along which the wave is propagated. A longitudinal wave travels in the form of compressions and rarefactions. The distance between two compressions or rarefactions is the wavelength of the wave. QUESTION : Waves on strings are always

asked Oct 30, 2017 by priyanka.c

1 answer

It is painful to walk bare footed on a road converted with pebbles because

asked Oct 30, 2017 by priyanka.c

1 answer