Question 1 :
The time taken by a particle of medium to complete its one vibration, is called:
Question 7 :
The maximum displacement of the particle of a medium on either side of its mean position is called:
Question 9 :
Speed of sound wave can be expressed in the form of
Question 11 :
The speed (v) of a longitudinal wave in a gas gaseous medium of density(d), at a pressure( P) is given as
Question 12 :
The sound produced by two tuning forks A and B have same amplitude and same waveform, but the frequency of A is three times more than B. In such a case :
Question 14 :
The amplitude of a sound wave is increased from 1 mm to 2 mm. The loudness of the sound will:
Question 15 :
A tuning fork of frequency 256 Hz will resonate with another tuning fork of frequency:
Question 16 :
When a force acts on a stationary rigid body which is free to move, moves in a straight line is called_____________
Question 18 :
What should be the value of algebraic sum of moment of all forces of a body about the point of Rotation?
Question 22 :
A body is acted upon by two unequal forces in opposite direction, but not in same line. The effect is that
Question 24 :
The moment of force is a scalar quantity. Is it true or false?
Question 25 :
How many types of motion can you observe when a rigid body acted upon by a force?
Question 28 :
A body is acted upon by two unequal and opposite forces along different lines of action of force. The body will have
Question 30 :
How can the direction of rotation of a body be changed?
Question 31 :
What is the relation between wavelength ({tex}\lambda{/tex} ), velocity (V) and frequency (f)?
Question 33 :
The distance of focus from the optical centre of lens, is called its<br/>__________________.
Question 34 :
When a light passing from one denser medium to a rare medium then the velocity of light
Question 36 :
For which case the focal length is greater for a fixed lens.
Question 37 :
The distance between the object at 3 m from a plane mirror and its image is
Question 38 :
How many types of convex lens is obtained in market normally?
Question 40 :
What is the condition when a lens is called an equiconvex or equi -concave?
Question 41 :
The frequency range of visible light is from {tex} 3.75 \times 10^{14} \mathrm{~Hz} {/tex} to {tex} 7.5 \times 10^{14} \mathrm{~Hz} {/tex}. Calculate its wavelength range. Take the speed of light {tex} =3 \times 10^{8} \mathrm{~m} / \mathrm{s} {/tex}
Question 42 :
A lens forms an inverted image of an object equal to its own size. The object is :
Question 43 :
The critical angle for a material X is 45°. The total internal reflection will take place, if the angle of incidence in the denser medium is :
Question 44 :
A ray of light incident on a lens parallel to its principal axis, after refraction passes through or appears to come from:
Question 46 :
What will be happen when a cold body and hot body keeps in contact?
Question 50 :
What is the relation between amount of heat energy absorbed by a body and rise in temperature of the body?
Question 51 :
Specific heat of a body is its characteristic property. Is it true or false?
Question 52 :
Experimentally it is proved the heat energy in a body depend on the temperature. Is it true or false?
Question 53 :
In which factor, the quantity of heat energy absorbed to increase the temperature of a body depends?
Question 54 :
The total internal energy of all molecules of a substance is called
Question 55 :
The amount of heat energy contained in a body depends on
Question 62 :
What is the relation between work (W), charge (Q) and potential (V)?
Question 66 :
In which magnet we can change the polarity of a magnet?
Question 67 :
As we move away from a current carrying conductor, the spacing between the magnetic lines of force
Question 68 :
In which of the instrument we do not use a horse shoe magnet?
Question 69 : A magnet AB is broken into two pieces. Which of the combination of polarity of A, B, C and D is possible?<img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ICSE%20-%20Class%2010%20/5ef1c8681d9a724bde680b20"/>
Question 71 :
Violet, green, red and yellow are the four colours formed on a white screen when a polychromatic light is dispersed. The arrangement of colours in the decreasing order of wave lengths is :
Question 72 :
Two conductors A and B have 500 and 100 units of . negative charge when the conductors are connected by an electric wire the conventional current flows from :
Question 74 :
The angle of deviation is maximum for ……. when the dispersion of polychromatic light takes place
Question 75 :
When a current I flows through a resistance R for time t, the electrical energy spent is:
Question 78 :
If for any atom mass number is given by A and atomic number is Z. Find the number of neutron?
Question 83 :
What is the relation between the maximum no of electron ({tex}E_{number}{/tex}) in shell and number(n) of that shell?
Question 86 :
The atoms of different elements having same mass number, but different atomic numbers are called :
Question 87 :
The temperature required for the process of nuclear fusion is nearly:
Question 89 :
For any atom which number is determined the position of the atom in the periodic table?
