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Q1
#1
Physics → Fluid Mechanics and Properties of Matter → Pressure and Surface Tension
·
Moderate
A liquid is kept in a glass beaker. Which one of the following statements is correct regarding the pressure exerted by the liquid column at the base of the beaker?
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Playbook: Fluid Mechanics and Properties of Matter
A
The pressure depends on the area of the base of the beaker
B
The pressure depends on the height of liquid column
C
The pressure does not depend on the density of the liquid
D
The pressure neither depends on the area of the base of the beaker nor on the height of liquid column
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[Q74 · Apr · 2020]
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Q2
#2
Physics → Sound → Foundations — Sound, Perception, and the Ear
·
Easy
Which of the following statements is NOT correct regarding the travel of sound waves?
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Playbook: Sound
A
Sound waves can travel through water
B
Sound waves can travel through air
C
Sound waves can travel through steel
D
Sound waves can travel through vacuum
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[Q75 · Apr · 2020]
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Q3
#3
Physics → Light and Optics → Reflection and Mirrors
·
Easy
The correct relation between the radius of curvature R and focal length f of a spherical mirror is
Add
Playbook: Light and Optics
A
R
=
f
R = f
R
=
f
B
R
=
2
f
R = 2f
R
=
2
f
C
R
=
3
f
R = 3f
R
=
3
f
D
R
=
4
f
R = 4f
R
=
4
f
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[Q86 · Apr · 2020]
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Q4
#4
Physics → Light and Optics → Refraction, Speed of Light and TIR
·
Easy
A lemon kept in water in a glass tumbler appears to be larger than its actual size. It is because of
Add
Playbook: Light and Optics
A
reflection of light
B
scattering of light
C
refraction of light
D
polarization of light
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[Q87 · Apr · 2020]
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Q5
#5
Physics → Light and Optics → Light Phenomena and Spectrum
·
Easy
Name the scientist who first used a glass prism to obtain the spectrum of sunlight
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Playbook: Light and Optics
A
C. V. Raman
B
Lord Rayleigh
C
Isaac Newton
D
S. Chandrasekhar
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[Q89 · Apr · 2020]
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Q6
#6
Physics → Electricity and Magnetism → Electrical Power, Energy and Heating
·
Easy
The cost of energy to operate an industrial refrigerator that consumes 5 kW power working 10 hours per day for 30 days will be (Given that the charge per kW.h of energy = ₹ 4)
Add
Playbook: Electricity and Magnetism
A
₹ 600
B
₹ 6,000
C
₹ 1,200
D
₹ 1,500
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[Q90 · Apr · 2020]
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Q7
#7
Physics → Electricity and Magnetism → Magnetism and Magnetic Effects of Current
·
Moderate
Which one of the following statements regarding magnetic field is NOT correct?
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Playbook: Electricity and Magnetism
A
Magnetic field is a quantity that has direction and magnitude
B
Magnetic field lines are closed curves
C
Magnetic field lines are open curves
D
No two magnetic field lines are found to cross each other
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[Q91 · Apr · 2020]
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Q8
#8
Physics → Electricity and Magnetism → Electrical Devices
·
Easy
In an incandescent electric bulb, the filament of the bulb is made up of which metal?
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Playbook: Electricity and Magnetism
A
Aluminium
B
Copper
C
Tungsten
D
Silver
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[Q121 · Apr · 2020]
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Q9
#9
Physics → Electricity and Magnetism → Combination of Resistors
·
Moderate
·
Has image
Two equal resistors R are connected in parallel, and a battery of 12 V is connected across this combination. A dc current of 100 mA flows through the circuit as shown below. The value of R is
Add
Playbook: Electricity and Magnetism
A
120
Ω
120\ \Omega
120
Ω
B
240
Ω
240\ \Omega
240
Ω
C
60
Ω
60\ \Omega
60
Ω
D
100
Ω
100\ \Omega
100
Ω
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[Q122 · Apr · 2020]
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Q10
#10
Physics → Units, Measurement and Dimensions → Units and Dimensions
·
Easy
Which one of the following is NOT the unit of energy?
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Playbook: Units, Measurement and Dimensions
A
Joule
B
Watt-hr
C
Newton-metre
D
kg-metre/
s
e
c
2
sec^{2}
se
c
2
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[Q123 · Apr · 2020]
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Q11
#11
Physics → Gravitation → Orbits, Kepler and Escape
·
Moderate
Two planets orbit the Sun in circular orbits, with their radius of orbit as
R
1
=
R
R_1 = R
R
1
=
R
and
R
2
=
4
R
R_2 = 4R
R
2
=
4
R
. Ratio of their periods
(
T
1
/
T
2
)
(T_1/T_2)
(
T
1
/
T
2
)
around the Sun will be
Add
Playbook: Gravitation
A
1/16
B
1/8
C
1/4
D
1/2
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[Q128 · Apr · 2020]
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Q12
#12
Physics → Electricity and Magnetism → Combination of Resistors
·
Moderate
A metallic wire having resistance of
20
Ω
20\ \Omega
20
Ω
is cut into two equal parts in length. These parts are then connected in parallel. The resistance of this parallel combination is equal to
Add
Playbook: Electricity and Magnetism
A
20
Ω
20\ \Omega
20
Ω
B
10
Ω
10\ \Omega
10
Ω
C
5
Ω
5\ \Omega
5
Ω
D
15
Ω
15\ \Omega
15
Ω
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[Q129 · Apr · 2020]
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Q13
#13
Physics → Light and Optics → Light Phenomena and Spectrum
·
Hard
Light of uniform intensity impinges perpendicularly on a totally reflecting surface. If the area of the surface is halved, the radiation force on it will become
Add
Playbook: Light and Optics
A
double
B
half
C
four times
D
one fourth
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[Q130 · Apr · 2020]
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Q14
#14
Physics → Electricity and Magnetism → Magnetic Force and Fleming's Rules
·
Hard
·
Has image
A proton enters a magnetic field at right angles to it, as shown above. The direction of force acting on the proton will be
Add
Playbook: Electricity and Magnetism
A
to the right
B
to the left
C
out of the page
D
into the page
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[Q132 · Apr · 2020]
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Q15
#15
Physics → Sound → Foundations — Sound, Perception, and the Ear
·
Easy
Which one of the following statements about sound is NOT correct?
Add
Playbook: Sound
A
Sound travels at a speed slower than the speed of light
B
Sound waves are transverse waves
C
Sound waves are longitudinal waves
D
Sound travels faster in moist air than in dry air
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[Q133 · Apr · 2020]
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Q16
#16
Physics → Electricity and Magnetism → Electrical Devices
·
Easy
When the short circuit condition occurs, the current in the circuit
Add
Playbook: Electricity and Magnetism
A
becomes zero
B
remains constant
C
increases substantially
D
keeps on changing randomly
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[Q134 · Apr · 2020]
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Q17
#17
Physics → Light and Optics → Light Phenomena and Spectrum
·
Easy
Which one of the following types of radiations has the smallest wavelength?
Add
Playbook: Light and Optics
A
Microwaves
B
Infra-red
C
Visible light
D
X-rays
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[Q138 · Apr · 2020]
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Q18
#18
Physics → Electricity and Magnetism → Electrical Devices
·
Easy
The instrument used for detecting the presence of electric current in a circuit is
Add
Playbook: Electricity and Magnetism
A
Refractometer
B
Galvanometer
C
Viscometer
D
Diffractometer
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[Q139 · Apr · 2020]
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Q19
#19
Physics → Light and Optics → Light Phenomena and Spectrum
·
Moderate
The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appearance of the Sun is
Add
Playbook: Light and Optics
A
Reflection
B
Total internal reflection
C
Scattering
D
Interference
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[Q141 · Apr · 2020]
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Q20
#20
Physics → Light and Optics → Reflection and Mirrors
·
Easy
A lens has a power of +2·0 Dioptre. Which one of the following statements about the lens is true?
Add
Playbook: Light and Optics
A
The lens is concave and has a focal length of 0·5 metre
B
The lens is convex and has a focal length of 2·0 metre
C
The lens is convex and has a focal length of 0·5 metre
D
The lens is concave and has a focal length of 2·0 metre
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[Q142 · Apr · 2020]
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Q21
#21
Physics → Light and Optics → Refraction, Speed of Light and TIR
·
Moderate
The refractive index of fused quartz is 1·46 and that of sapphire is 1·77. If
v
q
v_q
v
q
is the speed of light in quartz and
v
s
v_s
v
s
is the speed of light in sapphire, then which one of the following relations is correct?
Add
Playbook: Light and Optics
A
v
q
>
v
s
v_q > v_s
v
q
>
v
s
B
v
s
>
v
q
v_s > v_q
v
s
>
v
q
C
v
s
=
v
q
v_s = v_q
v
s
=
v
q
D
v
s
=
v
q
2
v_s = \frac{v_q}{2}
v
s
=
2
v
q
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[Q149 · Apr · 2020]
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Q22
#22
Physics → Light and Optics → Reflection and Mirrors
·
Moderate
In case of a concave mirror, if an object is kept between principal focus F and pole P of the mirror, then which one of the following statements about the image is NOT correct?
Add
Playbook: Light and Optics
A
The image will be virtual
B
The image will be enlarged or magnified
C
The image will be formed at infinity
D
The image will be erect
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[Q150 · Apr · 2020]
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Q23
#23
Physics → Electricity and Magnetism → Electrical Devices
·
Easy
Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice versa ?
Add
Playbook: Electricity and Magnetism
A
Generator
B
Motor
C
Transformer
D
Vibrator
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[Q51 · Apr · 2017]
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Q24
#24
Physics → Light and Optics → Refraction, Speed of Light and TIR
·
Easy
An optical illusion which occurs mainly in deserts during hot summer is based on the principle of
Add
Playbook: Light and Optics
A
Reflection
B
Interference
C
Dispersion
D
Total internal reflection
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[Q52 · Apr · 2017]
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Q25
#25
Physics → Electricity and Magnetism → Magnetism and Magnetic Effects of Current
·
Easy
At which place Earth's magnetic field becomes horizontal ?
Add
Playbook: Electricity and Magnetism
A
Magnetic meridian
B
Magnetic equator
C
Geographical pole
D
Tropic of Cancer
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[Q53 · Apr · 2017]
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