Physics MCQs

Option A: Ordinary water

Option B: Heavy water

Option C: Lead

Option D: Aluminum

Correct Answer: Lead ✔

Option A: Cloud chamber

Option B: Linear accelerator

Option C: A mass spectrograph

Option D: Wilson cloud chamber

Correct Answer: Linear accelerator ✔

Option A: X-rays

Option B: Gamma rays

Option C: UV-rays

Option D: IR-rays

Correct Answer: Gamma rays ✔

Option A: Mass is not conserved

Option B: Energy is not conserved

Option C: Momentum is not conserved

Option D: The chargee is not conserved

Correct Answer: Momentum is not conserved ✔

Option A: Smaller ionization power

Option B: Greater ionization power

Option C: Neither greater nor smaller ionization power

Option D: Same ionization power

Correct Answer: Smaller ionization power ✔

Option A: Due to the electrostatic force of attraction

Option B: Due to the electrostatic force of repulsion

Option C: Due to a direct collision

Option D: Due to the gravitational force

Correct Answer: Due to the electrostatic force of repulsion ✔

Option A: Chargeless

Option B: Massless

Option C: Highly penetrating

Option D: All of above

Correct Answer: Highly penetrating ✔

Option A: 1

Option B: -1

Option C: +2

Option D: -2

Correct Answer: 1 ✔

Option A: Light waves

Option B: Heat waves

Option C: Microwaves

Option D: γ-rays

Correct Answer: γ-rays ✔

Option A: Sr-90

Option B: I-131

Option C: CA-41

Option D: C-14

Correct Answer: C-14 ✔

Option A: α-rays

Option B: β-rays

Option C: γ-rays

Option D: Neutron-rays

Correct Answer: Neutron-rays ✔

Option A: Trajectory

Option B: Range

Option C: Firing level

Option D: Limit

Correct Answer: Range ✔

Option A: Refrigeration

Option B: Aerosol spray

Option C: Plastic foam industry

Option D: All of above

Correct Answer: All of above ✔

Option A: Energy

Option B: Charge

Option C: Mass

Option D: MomentumB.

Correct Answer: ✔

Option A: ZnS

Option B: Barium platinocyanide

Option C: Calcium tungstate

Option D: All of above

Correct Answer: All of above ✔

Option A: Fast counting

Option B: Extremely fast counting

Option C: Slow counting

Option D: All situations

Correct Answer: Slow counting ✔

Option A: 10 times more

Option B: 100 times more

Option C: 100 times less

Option D: 10 times less

Correct Answer: 100 times more ✔

Option A: α-particle source

Option B: β-particle source

Option C: γ-rays source

Option D: Neutron source

Correct Answer: α-particle source ✔

Option A: Loses a small fraction of its energy

Option B: Losses most of its energy

Option C: Loses no energy at all

Option D: Loses all of its energy

Correct Answer: Losses most of its energy ✔

Option A: X-rays

Option B: α-rays

Option C: β-rays

Option D: γ-rays

Correct Answer: X-rays ✔

Option A: Through direct collision

Option B: Through electrostatic attraction

Option C: Through electrostatic repulsion

Option D: All of above

Correct Answer: Through electrostatic repulsion ✔

Option A: Plus one

Option B: Plus two

Option C: Minus two

Option D: Minus one

Correct Answer: Plus two ✔

Option A: α-rays

Option B: β-rays

Option C: γ-rays

Option D: B and C have equal antiseptic propertie

Correct Answer: γ-rays ✔

Option A: Cobalt-60

Option B: Strontium-90

Option C: Carbon-14

Option D: Nickel-63

Correct Answer: Cobalt-60 ✔

Option A: α-rays

Option B: β-rays

Option C: γ-rays

Option D: X-rays

Correct Answer: γ-rays ✔

Option A: Rectilinear

Option B: Curved

Option C: Zig-zag or erratic

Option D: Elliptical

Correct Answer: Zig-zag or erratic ✔

Option A: Protons

Option B: Electrons

Option C: Neutrons

Option D: Nothing

Correct Answer: Electrons ✔

Option A: Net energy is conserved

Option B: Net charge is conserved

Option C: Net momentum is conserved

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Fission reaction

Option B: Fusion reaction

Option C: Chain reaction

Option D: Chemical reaction

Correct Answer: Chain reaction ✔

Option A: Hardness

Option B: Density

Option C: Mass

Option D: Half life

Correct Answer: Half life ✔

Option A: 92U235

Option B: 92U238

Option C: 92U234

Option D: 92U239

Correct Answer: 92U238 ✔

Option A: Heat energy is released

Option B: Nuclear energy is released

Option C: Chemical energy is released

Option D: Light energy is released

Correct Answer: Nuclear energy is released ✔

Option A: 3.74 x 109 disintegration per sec

Option B: 3.70 x 1010 disintegration per sec

Option C: 3.55 x 1010 disintegration per sec

Option D: 3.60 x 1010 disintegration per sec

Correct Answer: 3.70 x 1010 disintegration per sec ✔

Option A: 3.74 x 109 disintegration per sec

Option B: 3.70 x 1010 disintegration per sec

Option C: 3.55 x 1010 disintegration per sec

Option D: 3.60 x 1010 disintegration per sec

Correct Answer: 3.70 x 1010 disintegration per sec ✔

Option A: 224 – 84

Option B: 220 – 80

Option C: 222 – 86

Option D: 226 – 87

Correct Answer: 222 – 86 ✔

Option A: Smaller

Option B: Greater than 82

Option C: Same

Option D: Sometimes smaller some times greater

Correct Answer: Greater than 82 ✔

Option A: Molecules

Option B: Ions

Option C: Elements

Option D: Isotopes

Correct Answer: Elements ✔

Option A: Isotopes

Option B: Isobars

Option C: Isotones

Option D: Isomers

Correct Answer: Isobars ✔

Option A: 1.67 x 10-31 kg

Option B: 1.67 x 10-27 kg

Option C: 9.1 x 10-31 kg

Option D: 1.67 x 10-19 kg

Correct Answer: 1.67 x 10-27 kg ✔

Option A: Antiproton

Option B: Positron

Option C: Gamma rays

Option D: Photon

Correct Answer: Positron ✔

Option A: Plus 1.6 x 10-19C

Option B: Zero

Option C: Minus 1.6 x 10-19C

Option D: No definite charge

Correct Answer: Zero ✔

Option A: Ampere

Option B: Maxwell

Option C: Millikan

Option D: Thomson

Correct Answer: Millikan ✔

Option A: α-rays

Option B: β-rays

Option C: γ-rays

Option D: All of above have the same speed

Correct Answer: γ-rays ✔

Option A: Iron rods

Option B: Graphite rods

Option C: Cadmium rods

Option D: Platinum rods

Correct Answer: Cadmium rods ✔

Option A: Binding energy per nucleon

Option B: Energy of decay

Option C: Destruction energy

Option D: All of above

Correct Answer: Binding energy per nucleon ✔

Option A: N=Noe-λt

Option B: N=Noeλt

Option C: N=Noe-λt/2

Option D: No=N(1+eλt)

Correct Answer: N=Noe-λt ✔

Option A: 10-12m

Option B: 10-11m

Option C: 10-10m

Option D: 10-14m

Correct Answer: 10-10m ✔

Option A: Neutron

Option B: Proton

Option C: Electron

Option D: Positron

Correct Answer: Proton ✔

Option A: The binding energy of the nucleus

Option B: Packing fraction

Option C: The average energy of the nucleus

Option D: All of above are one and the same thing

Correct Answer: Packing fraction ✔

Option A: Proton-proton

Option B: Proton-neutron

Option C: Neutron-neutron

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Greater than 72

Option B: Greater than 82

Option C: Greater than 92

Option D: Greater than 102

Correct Answer: Greater than 92 ✔

Option A: 200MeV

Option B: 40MeV

Option C: 30MeV

Option D: 20MeV

Correct Answer: 200MeV ✔

Option A: A & B

Option B: B & C

Option C: C & A

Option D: A B & C

Correct Answer: C & A ✔

Option A: Can exist inside the nucleus

Option B: Cannot exist inside the nucleus

Option C: Can exist both inside and outside the nucleus

Option D: Do not know

Correct Answer: Do not know ✔

Option A: X-rays

Option B: B-rays

Option C: γ-rays

Option D: All have the equal penetrating powe

Correct Answer: γ-rays ✔

Option A: Nucleon

Option B: Meson

Option C: Boson

Option D: Quartz

Correct Answer: Nucleon ✔

Option A: Antiproton

Option B: Antineutron

Option C: Positron

Option D: All of above

Correct Answer: All of above ✔

Option A: Greater than the critical size

Option B: Less than the critical size

Option C: Equal to the critical size

Option D: All of above can build up a change reaction

Correct Answer: Greater than the critical size ✔

Option A: 1.66 x 10-27kg

Option B: 166 x 10-15ng

Option C: 166 x 10-20g

Option D: All of above

Correct Answer: All of above ✔

Option A: Energy is absorbed

Option B: Energy is released

Option C: Mass is increased due to energy absorption

Option D: Mass is reduced due to the energy released

Correct Answer: Energy is released ✔

Option A: 92

Option B: 235

Option C: 143

Option D: Different for different isotopes

Correct Answer: Different for different isotopes ✔

Option A: J.J.Thomson model

Option B: Rutherfords model

Option C: Bohrs model

Option D: All of the above laws contradict the statement

Correct Answer: J.J.Thomson model ✔

Option A: Rotational equilibrium

Option B: Translational equilibrium

Option C: Static equilibrium

Option D: Both A and C are corret answer

Correct Answer: Static equilibrium ✔

Option A: 1st condition of equilibrium

Option B: 2nd condition of equilibrium

Option C: Both Ist and 2nd condition of equilibrium

Option D: Impossible

Correct Answer: 2nd condition of equilibrium ✔

Option A: Always at rest

Option B: Always in uniform motion

Option C: May be at rest or in uniform motion

Option D: May be at rest or in motion

Correct Answer: May be at rest or in uniform motion ✔

Option A: Acceleration

Option B: Linear acceleration

Option C: Angular acceleration

Option D: Direction of motion of the body

Correct Answer: Angular acceleration ✔

Option A: N.m

Option B: joule

Option C: Both a and b are correct

Option D: Neither a nor b is correct

Correct Answer: N.m ✔

Option A: [ML2T-2]

Option B: [MLT-2]

Option C: [ML2T]

Option D: [ML-2T-2]

Correct Answer: [ML2T-2] ✔

Option A: Turning effect of force

Option B: Cross product of position vector and force

Option C: Product of force and moment arm

Option D: All A, B and C are correct

Correct Answer: All A, B and C are correct ✔

Option A: 30°

Option B: 45°

Option C: 60°

Option D: 180°

Correct Answer: 45° ✔

Option A: Their dot product

Option B: Their cross product

Option C: Head to tail rule

Option D: Right-hand rule

Correct Answer: Their dot product ✔

Option A: ??3 i^ + ??3 j^ + ??3 k^

Option B: 1/??3 i^ + 1/??3 j^ +1/ ??3 k^

Option C: ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^

Option D: Both B and C are correct

Correct Answer: Both B and C are correct ✔

Option A: Zero magnitude

Option B: No specified direction

Option C: Both A and B are correct

Option D: Both A and B are not correct

Correct Answer: Both A and B are correct ✔

Option A: West

Option B: North

Option C: Down

Option D: Up

Correct Answer: Down ✔

Option A: Head to tail rule

Option B: Right-hand rule

Option C: Left-hand rule

Option D: Triangular rule

Correct Answer: Right-hand rule ✔

Option A: 1

Option B: i^

Option C: j^

Option D: k^

Correct Answer: 1 ✔

Option A: A.B = A^ B^

Option B: |A| = |B|

Option C: |A^| = |B^|

Option D: AB^ = BA^

Correct Answer: A.B = A^ B^ ✔

Option A: B is anti-parallel to A

Option B: B is a negative vector of A

Option C: B has a negative magnitude

Option D: B is perpendicular to A

Correct Answer: B is a negative vector of A ✔

Option A: A.B/A

Option B: A.B/B

Option C: A.cosθ

Option D: Both a and b are correct

Correct Answer: A.B/A ✔

Option A: 1st

Option B: 2nd

Option C: Both 1st and 3rd

Option D: 4th

Correct Answer: 1st ✔

Option A: 30°

Option B: 60°

Option C: 90°

Option D: 120°

Correct Answer: 60° ✔

Option A: Can produce torque

Option B: Cannot produce torque

Option C: Some time can produce torque some time cannot

Option D: Has no relation with torque

Correct Answer: Cannot produce torque ✔

Option A: A. B = Ax Bx + Ay By + Az Bz

Option B: A. B = Ax By + Ay Bz + Az By

Option C: A. B = Ay Bz + Az By + Az Bx

Option D: A. B = Ax Bz + Ay By + Az Bx

Correct Answer: A. A. B = Ax Bx + Ay By + Az Bz ✔

Option A: 0

Option B: 1

Option C: -1

Option D: i^

Correct Answer: 1 ✔

Option A: First

Option B: Second

Option C: Third

Option D: Both 1st and 3rd

Correct Answer: Both 1st and 3rd ✔

Option A: They are parallel vectors

Option B: They are anti parallel vectors

Option C: They are a perpendicular vector

Option D: They are rotated through 270°

Correct Answer: They are rotated through 270° ✔

Option A: 2i^ – 2j^ + k^

Option B: (2i^ – 2j^ +k^)/9

Option C: (2i^ – 2j^ +k^)/3

Option D: (2i^ – 2j^ +k^)/5

Correct Answer: (2i^ – 2j^ +k^)/3 ✔

Option A: Zero

Option B: One

Option C: i^

Option D: k^

Correct Answer: k^ ✔

Option A: Accelerating force increases on the wheel

Option B: Two forces act on the wheel

Option C: Two hands provide a firm grip

Option D: The couple acts on the wheel

Correct Answer: The couple acts on the wheel ✔

Option A: Torque and energy

Option B: Momentum and impulse

Option C: Energy and work

Option D: Mass and moment of inertia

Correct Answer: Mass and moment of inertia ✔

Option A: Concurrent

Option B: Non-concurrent

Option C: Parallel

Option D: Non-parallel

Correct Answer: Concurrent ✔

Option A: 30°

Option B: 60°

Option C: 90°

Option D: 120°

Correct Answer: 120° ✔

Option A: Has direction 45° with an x-axis

Option B: Has magnitude 2

Option C: Has magnitude 2 and direction °=45° with a y-axis

Option D: Has magnitude -2

Correct Answer: Has magnitude -2 ✔

Option A: 1

Option B: 2

Option C: 3

Option D: Infinite

Correct Answer: Infinite ✔

Option A: Vector

Option B: Position Vector

Option C: Vector in the direction at angle θ with an x-axis

Option D: The unit vector in the direction at angle θ with an x-axis

Correct Answer: The unit vector in the direction at angle θ with an x-axis ✔

Option A: 1

Option B: 2

Option C: 3

Option D: 4

Correct Answer: 3 ✔

Option A: Polar coordinate system

Option B: Cartesian coordinate system

Option C: Cylindrical coordinate system

Option D: Spherical coordinate system

Correct Answer: Cartesian coordinate system ✔

Option A: X-axis

Option B: Normal on a surface

Option C: Y-axis

Option D: Z-axis

Correct Answer: Normal on a surface ✔

Option A: Dimensionless

Option B: Dimensional scalar

Option C: Negative

Option D: All A, B and C are correct

Correct Answer: All A, B and C are correct ✔

Option A: One angle

Option B: Two angle

Option C: Three angle

Option D: No angle

Correct Answer: Three angle ✔