Free physics question bank
24 January Morning Shift physics questions with solutions
Browse 24 January Morning Shift Physics questions with solutions. Useful for JEE, NEET, and school exam revision.
Showing 1–10 of 25 questions
- Numericeasysemiconductor
A voltage regulating circuit consisting of Zener diode, having break-down voltage of 10 V and maximum power dissipation of 0.4 W, is operated at 15 V. The approximate value of protective resistance in this circuit is ________ Ω.
JEE Mains 202624 January Morning Shift
Open question & full solution → - MCQmediumCurrent electricity
Two resistors 2 Ω and 3 Ω are connected in the gaps of bridge as shown in figure. The null point is obtained with the contact of jockey at some point on wire XY. When an unknown resistor is connected in parallel with 3 Ω resistor, the null point is shifted by 22.5 cm toward Y. The resistance of unknown resistor is____Ω.
Options
JEE Mains 202624 January Morning Shift
Open question & full solution → - IntegermediumNewtons law of motion and Friction
In the given figure the blocks A, B and C weigh 4 kg, 6 kg and 8 kg respectively. The co-efficient of sliding friction between any two surfaces is 0.5. The force F⃗ required to slide the block C with constant speed is ________ N.
(Use g = 10 m/s²)
JEE Mains 202624 January Morning Shift
Open question & full solution → - MCQmediumThermodynamics
Density of water at 4°C and 20°C are 1000 kg/m³ and 998 kg/m³ respectively. The increase in internal energy of 4 kg water when it is heated from 4°C to 20°C is____J.
(Specific heat capacity of water = 4.2 × 10³ J·kg⁻¹·°C⁻¹ and 1 atmospheric pressure = 10⁵ Pa)
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JEE Mains 202624 January Morning Shift
Open question & full solution → - MCQmediumGeometrical optics
The exit surface of a prism with refractive index n is coated with a material having refractive index n/2. When this prism is set for minimum angle of deviation it exactly meets the condition of critical angle. The prism angle is____
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JEE Mains 202624 January Morning Shift
Open question & full solution → - MCQmediumUnits, Dimensions, Measurements and Errors
Match the List-I with List-II
List-I
A. Magnetic induction
B. Magnetic flux
C. Magnetic permeability
D. Self inductanceList-II I. MLT⁻²A⁻² II. ML²T⁻²A⁻² III. ML⁰T⁻²A⁻¹ IV. ML²T⁻²A⁻¹
Choose the correct answer from the options given below:
Options
JEE Mains 202624 January Morning Shift
Open question & full solution → - MCQeasyNewtons law of motion and Friction
A spring of force constant 15 N/m is cut into two pieces. If the ratio of their length is 1:3, then the force constant of smaller piece is____N/m
Options
JEE Mains 202624 January Morning Shift
Open question & full solution → - MCQeasyThermodynamics
A brass wire of length 2m and radius 1mm at 27°C is held taut between two rigid supports. Initially it was cooled to a temperature of -43°C creating a tension T in the wire. The temperature to which the wire has to be cooled in order to increase the tension in it to 1.4T, is ____°C
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JEE Mains 202624 January Morning Shift
Open question & full solution → - NumericmediumMagnetism and matter
A short bar magnet placed with its axis at 30° with an external field of 800 Gauss, experiences a torque of 0.016 N·m. The work done in moving it from most stable to most unstable position is α × 10⁻³ J. The value of α is _______.
JEE Mains 202624 January Morning Shift
Open question & full solution → - MCQeasyWave Optics
An unpolarised light is incident at an interface of two dielectric media having refractive indices of 2 (incident medium) and 2√3 (medium) respectively. To satisfy the condition that reflected and refracted rays are perpendicular to each other, the angle of incidence is ______.
Options
JEE Mains 202624 January Morning Shift
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