Class 10 Physics Grand MCQs Tests Reduced Syllabus

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

Which is the correct order of radiations for penetrating ability?

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

If the time period of simple pendulum is one second, then its length on earth will be:

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

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

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

Two resistors of 20\(\Omega \) each are connected in parallel with a battery of 10V, the total current passing through the circuit is:

The unit of power of lens is:

A ray of light passing through air with speed \(3\times { 10 }^{ 8 }\quad { ms }^{ -1 }\) enters into glass of refractive index 1.52, the speed in glass will be:

What happens to the atomic number of an element which emits one alpha particle and a beta particle?

AND gate can be formed using two:

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

If radius of curvature is 10 cm then focal length of convex lens is:

If 5 joule of work is needed to shift the 10 coulomb charge from one place to another place then the potential between the plates will be:

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

What is the displacement of an object in simple harmonic motion when K.E=P.E?

Loudness of sound depends upon:

The characteristics of sound by which a loud and a faint sound can be distinguished is:

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

What is the frequency of second pendulum?

If we double the distance between two point charges then coulomb’s force will:

In Vacuum, all Electro Magnetic Waves have the same:

The human ear can respond to the intensities ranging from:

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

The Audible Frequency Range for human beings is from 20 Hz to:

How long does it take a current of 10 mA to deliver 30 C of charge?

Kilowatt-hour is a large unit to measure:

The magnitude of the sensation produced on the ear by a sound is called its:

Capacitance is defined as:

Kilowatt hour is a unit of:

The focal length of a convex lens of power
5 D is ______ cm.

What is the size of Nucleus?

The SI unit of electric potential difference is:

If the mass of bob of a pendulum is increased by a factor of ‘2’ then the period of pendulum motion will:

Which of the following equations is correct for magnification?

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

If the length of the simple pendulum is halved its new time period ‘T’ will become:

The output of a NAND gate is 0 when:

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

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

The critical angle of water will be:

The electrical power is given by:

Approximate speed of sound in distilled water at 25 °C is:

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 intensity level of mosquito buzzing is:

Waves transfer:

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

How is energy from the sun released?

1 pF = ?

If X=A.B, then ‘X’ is ‘1’, when:

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

For the diagnosis of brain tumor _______ is used.

If the length of a simple pendulum is doubled, then its new frequency f' becomes:

The loudness of a sound is most closely related to:

Two charged spheres are separated by 2 mm. Which of the following pairs would have the highest attractive force?

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

The loudness of a sound is most closely related to:

Two capacitors of 20\(\mu\)F each are connected in series with a battery of 10V. The total charge passing through the circuit is:

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

The half-life of Krypton is 3 minutes. Out of 100g of Krypton, how much will be after 9 minutes?

The sound energy passing per unit area per second is called:

The SI unit of intensity of sound is:

Which radio isotope is used for cancerous tumour?

Rainbow is formed due to:

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

Three resistors of 2Ω each, connected in parallel are equivalent to a resistance of:

The output of a NAND gate is zero when:

Which of the following characteristics of waves is independent of others?

The pendulum clock was invented by:

What is the length of second’s pendulum?

One of the isotopes of Uranium is \(^{ 236 }{ U }_{ 92 }\) . The number of neutrons in this isotope is:

Capacitance is defined as:

According to Right Hand Rule for a current carrying conductor, current will be in the direction of:

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

For finding a virtual and erect image by a converging lens, object should be placed:

Speed of light in water is approximately:

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

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?

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

The unit of electric potential is:

Capacitance is defined as:

Which one is not true for electric power?

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

The intensity level of faintest audible sound in decibel is:

In vacuum, all electromagnetic waves have the same:

The property of sound wave that distinguishes between shrill and grave sound is:

The unit of e.m.f in SI system is volt, which is equal to:

In case of vibratory motion, time period is reciprocal of the:

When a ball is gently displaced from the centre of a bowl, it starts oscillating about the centre due to:

Capacitance is defined as:

One pico farad (PF) is equal to:

The inner part of fiber optics is called:

If speed of sound is 340 \(ms^{-1}\) at normal temperature in air we can hear the echo after:

The equivalent capacitance of series capacitors is ________ the capacitance of any individual capacitor in the combination.

How many times speed of sound is greater in water than air?

Which one is incorrect when three capacitors are connected in parallel?

Which one is OHMIC in nature?

The index of refraction depends on:

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

If turn ratio of a transformer is 100 then:

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

The isotope \(^{ 1 }{ U }_{ 1 }\) contains:

Focal Length of Spherical Mirror is related to the Radius of Curvature by:

Waves transfer:

One bel is equal to:

A step-up transformer:

In Vacuum, all electromagnetic waves have the same:

The presence of magnetic field can be detected by a:

Speed of sound in vacuum is:

NOT Gate is also called:

Release of energy by the Sun is due to:

What is the relationship between resistance and length of a conductor?

If F=0.08N and X=4cm then value of “K” is:

The SI unit of intensity of sound is:

In concave mirror, which surface is reflecting?

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

The index of refraction depends upon:

S.I unit of spring constant “K” is:

Five joules of work is needed to shift 5C of charge from one place to another. The potential difference between the places is:

The particles emitted from a hot cathode surface are called:

The SI unit of electromotive force is:

AND gate can be formed by using two:

S.I unit of charge is:

During fission of 1 kg of uranium-235 _______ energy is released.

In case of OR and AND operation, if switches S1 and S2 both are open then the lamp is: