Matric Notes Physics 10th

Which of the following is an example of simple harmonic motion?

If the mass of the bob of a pendulum is increased by a factor of 3, the period of the pendulum's motion will:

Which of the following devices can be used to produce both a transverse and longitudinal waves?

Waves transfer:

Which of the following is a method of energy transfer?

In a vacuum all electromagnetic waves have the same:

A large ripple tank with a vibrator working at a frequency of 30Hz produces 25 complete waves in a distance of 50cm. The velocity of the wave is:

Which of the following characteristics of a wave is independent of the others?

The relation between v, f and λ of a wave is:

Which is an example of longitudinal wave?

How does sound travel from its source to your ear?

Which form of energy is sound?

Astronauts in space need to communicate with each other by radio links because:

The loudness of a sound is most closely related to its:

For a normal person audible frequency range for  sound wave lies between:

When frequency of sound wave is increased, which of the following decreases? (i) wavelength (ii) period (iii) amplitude:

Which of the following quantities is not change during refraction of light?

A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance?

An object is placed at the center of curvature mirror. The image produced by the mirror is located:

An object is 14 cm in front of a convex mirror. The image is 5.8 cm behind the mirror. What is the focal length of the mirror?

The index of refraction depends on:

Which type of image is formed by a convex lens on a screen?

Which type of image is produced by the converging lens of human eye if it views a distant object?

Image formed on a camera is:

If a ray of light in glass is incident on an air surface at an angle greater than the critical angle, the ray will:

The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be:

A positive electric charge:

An object gains excess negative charge after being rubbed against another object, which is:

Two uncharged objects A and B are rubbed against each other. When object B is placed near a negatively charged object C, the two objects repel each other. Which of these statements is true about object A?

When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate?

According of Coulomb's law, what happens to the attraction of two oppositively charged objects as their distance of separation increases?

The Coulomb's law is valid for the charges which are:

A positive and a negative charge are initially 4 cm apart. When they are moved closer together so that they are now only 1 cm apart, the force between them is:

Five joules of work is needed to shift 10 C of charges from one place to another. The potential difference between the places is:

Two charged spheres are separated by 2 mm. Which of the following would produce the greatest attractive force?

Electric field lines:

Capacitance is defined as:

An electric current in conductors is due to flow of:

What is the voltage across a 6Ω resistor when 3A of current passes through it?

What happens to the intensity or the brightness of lamps connected in series as more and more lamps are added?

Why should house-held appliances be connected in parallel with the voltage source?

Electric potential and e.m.f:

When we double the voltage in a simple electric circuit, we double the:

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power:

What is the power rating of a lamp connected to a 12V source when it carries 2.5A?

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

Which statement is true about the magnetic poles?

What is the direction of the magnetic filed lines inside a bar magnet?

The presence of a magnetic field can be detected by a:

If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire:

D.C motor converts:

Which part of D.C. motor reverses the direction of current through the coil every half-cycle?

The direction of induced e.m.f. in a circuit is in accordance with conservation of:

The step-up transformer:

The turn ratios of a transformer is 10. It means:

The process by which electrons are emitted by a hot metal surface is known as:

The particles emitted from a hot metal cathode surface are:

The logical operation performed by this gate is:

AND gate can be formed by using two:

The output of a two input NOR gate is 1 when:

If X = A.B then X is 1 when:

The output of NAND gate is 0 when:

In computer terminology information means:

Which is the most suitable means of reliable continuous communication between an orbiting satellite and Earth?

The basic operations performed by a computer are:

The brain of any computer system is:

Which of the following is not processing?

From which of the following we can get information almost about everything?

What does the term e-mail stand for?

1. Isotopes are atoms of same element with different.

2. One of the isotopes of uranium is ^238₉₂U. The number of neutrons in this isotope is.

3. Which among the following radiations has more penetrating power?

4. What happens to the atomic number of an element which emits one alpha particle?

5. The half-life of a certain isotope is 1 day. What is the quantity of the isotope after 2 days?

6. When Uranium (92 protons) ejects a beta particle, how many protons will be in the remaining nucleus?

7. Release of energy by the Sun is due to.

8. When a heavy nucleus splits into two lighter nuclei, the process would.

9. The reason carbon-dating works is that.

The disturbance travelling in a medium is called:

The force applied on the mass attached with a spring is represented by:

1. F
2. F_c
3. F_ext
4. F_x

The unit of spring constant is:

1. m
2. kg
3. Nm²
4. Nm^-1

If the displacement in spring is 'x' of mass 'm' attached with a spring then restoring force is:

The ratio of external force applied on the spring to displacement is called:

The time required to complete one round trip about mean position is called:

The time period of mass attached with a spring is:

The time period of simple pendulum is:

The maximum displacement from mean position is:

The value of acceleration in Simple Harmonic Motion at mean position is:

The wave in which particles of the medium vibrate parallel to the direction of wave is called:

The wave in which particles of the medium vibrate perpendicular to the direction of wave is called:

Sound wave is an example of:

The energy is transferred from one place to another:

Wave has property:

The part of wave at which particles of the medium are below the mean position is called:

The distance between two consecutive trough or crest is called:

The number of waves passing through a point in one second is called:

The unit of frequency is:

The speed of waves can be calculated by:

The example of shock absorber of the vehicles are:

Time period is reciprocal of:

The product of frequency and time period is equal to:

If the mass of bob of a simple pendulum is doubled, its time period:

If the length of a simple pendulum is halved, its time period 'T' will become:

In simple pendulum motion, restoring force is provided by:

Ripple tank is an instrument used to study the characteristics of:

Radio waves are:

The product of frequency and wavelength is equal to:

When a body moves to and for about a point, its motion is called:

If time period is given the frequency is calculated as:

The distance between two consecutive wave compressions and rarefactions is:

The spring constant is:

Frequency is equal to:

The speed of sound in air at 21^oC is:

1. 336 ms^-1
2. 343 ms^-1
3. 430 ms^-1
4. 470 ms^-1

Bats can hear sound of frequency up to:

The unit of intensity of sound:

1. Wm^-1
2. Wm
3. Wm^-2
4. Wm²

The speed of sound in air at 0^oC is:

1. 331 ms^-1
2. 231 ms^-1
3. 376 ms^-1
4. 386 ms^-1

The speed of sound in sea water at 25^oC is:

1. 1530 ms^-1
2. 1531 ms^-1
3. 1560 ms^-1
4. 1570 ms^-1

The speed of sound in iron at 25^oC is:

1. 5950 ms^-1
2. 5900 ms^-1
3. 6950 ms^-1
4. 6940 ms^-1

The frequency of silent whistle is:

The sound level of rustling of leave is:

To hear echoes, the minimum distance of the obstacle from source of sound should be:

The intensity of rustling of leaves is:

1. 10^-11 Wm^-2
2. 10^-10 Wm^-2
3. 10^-9 Wm^-2
4. 10^-12 Wm^-2

The intensity level of train siren is:

The pitch of a sound is most closely related to its:

The quality of sound is most closely related to its:

The technique or method used to absorb undesirable sounds by soft and porous surface is called:

Mice can hear frequencies upto:

Sound waves having frequency lower than 20Hz are called:

Sound waves having frequency higher than 20, 000 Hz are called:

1 bel = :

Ultrasound waves carry energy __ than infrasonic:

Level of noise recommended in eight hour work day:

The sensation of sound persists in our brain for:

The speed of sound in a liquid is __ more than that in gases:

We can distinguish between the notes of a piano and flute due to __ of sound:

The characteristics of sound by which we can distinguish between two sounds of same loudness and pitch is called:

Example of Mechanical waves is:

The diameter of spherical mirror is called:

The center of curved surface of spherical mirror is called:

Half of radius of curvature is called:

The point through which rays of light pass after reflection from concave mirror is called principal:

The distance between principal focus and pole of mirror is called:

The mirror whose inner surface is reflecting is called:

The mirror whose outer surface is reflecting is called:

The line which passes through pole of the mirror and center of curvature is called principal:

The ray of light after reflection from concave mirror passes through:

Spherical mirrors are used in:

Magnification of mirror is given by:

The distance of the object from the mirror is represented by:

The distance of image from mirror is represented by:

Snell's law is:

Concave mirror formula is given by:

Focal length for concave mirror is:

Bouncing back of light after striking the surface is called:

The ratio of image height to object height is called:

When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90^o is called:

The critical angle for glass is __^o:

The critical angle for water is __^o:

Critical angle for diamond is __^o:

In compound microscope, the objective lens have focal length __ than eye piece:

Which animal have ability to move his eye lens?

The refractive index of water is:

The formula of focal length is:

Optical fibers works on the principle of:

The refractive index of ice is:

In totally reflecting prism one angle is of 90^o, and the other two angles are of:

In totally reflecting prism one angle is of __^o:

Totally reflecting prism turns the incident ray at an angle of __^o:

The refractive index of internal coating of optical fiber is:

A converging lens becomes a magnifying glass when an object is placed:

To see stomach problems we use:

Sun light consists of __ colors:

The refractive index of air is:

Power of lens is:

Speed of light in air is:

1. 3 x 1o⁸ m/s
2. 340 m/s
3. 3 x 10⁵ m/s
4. 3 x 10⁶ m/s

A normal eye can see near object clearly at a distance of:

Power of a convex lens is 10D. Its focal length is:

Which of the following is always virtual in case of convex mirrors?

The refractive index of diamond is:

The speed of light in water is:

1. 2.1 x 10³ m/s
2. 2.5 x 10³ m/s
3. 2.3 x 10⁸ m/s
4. 2.3 x 10^-8 m/s

SI unit of charge is:

One coulomb is equal to charge on how many electrons:

1. 6.25 x 10^-19
2. 6.25 x 10¹⁹
3. 6.25 x 10¹⁸
4. 6.25 x 10^-18

If we double the distance between two charges, then electrostatic force becomes:

The electrostatic force acting on two charges each of 1C separated by 1m is:

1. 9 x 10⁹ N
2. 9 x 10^-9 N
3. 9 x 10⁸ N
4. 9 x 10^-8 N

Value of 'k' in electrostatic force (Coulomb's law) depends upon:

Electric field lines were introduced by:

Positive charge in an electric field always tend to move:

Unit of electrical energy is:

SI unit of electric intensity is:

1. watt
2. NC^-1
3. Ns^-1
4. Nm

Electric intensity is a quantity:

Electric potential is a quantity:

SI unit of electric potential is:

1 volt is equal to:

1. JC
2. JC^-1
3. JC^-2
4. JC^-3

SI unit of capacitance is:

In variable capacitor, dielectric medium is:

Static electricity can be generated by:

Give the number of factors which affect the ability of a capacitor to store charge:

The value of K in SI unit is:

1. 9 x 10²⁰ Nm²C^-2
2. 8 x 10⁹ Nm²C^-2
3. 9 x 10⁹ Nm²C^-2
4. 10 x 10^-9 Nm²C^-2

To protect the gold leaves of electroscope from the external electric disturbances, the aluminum foil is grounded by a thin wire, which is made up of:

Capacitor are used to store:

Electroscope is used for detecting:

If the distance between two point charges is reduced to half, the Coulomb's force become:

If a neutral body is brought near to the electroscope its leaves:

If the field is stronger than lines of forces are __ to each other:

If the potential energy of one coulomb charge is one joule then its potential will be:

The product of charge 'q' and potential difference is equal to:

What will be the capacitance of capacitor by joining them in parallel:

When a positive charge of 2 coulombs is placed at a point in an electric field, it experiences a force of 6N. The intensity of electric field at this point is:

1. 6 NC^-1
2. 3 NC^-1
3. 12 NC^-1
4. 1.5 NC^-1

Each volt of lightening contains energy:

1. 4 x 10⁶ joules
2. 1000 joules
3. 1000 million joules
4. 10 joules

Capacitors that are used in resonant circuits that tune radios to particular frequencies, such circuits are called:

If there is divergence of leaves by touching a body with electroscope then the body is:

In fixed capacitor dielectric used is:

Instrument used for detecting and testing the nature of charge on a body is called:

The phenomena used in capacitor is: