Q JEE MAIN 2026

The temperature of a metal strip having coefficient of linear expansion $\alpha$ is increased from $T_1$ to $T_2$ resulting in...

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Q JEE MAIN_2026

The heat extracted out of x gram of water initially at $50^{\circ} \mathrm{C}$ to cool it down to $0^{\circ} \mathrm{C}$...

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Q JEE MAIN 2026

In a perfectly inelastic collision, two spheres made of the same material with masses 15 kg and 25 kg ,...

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Q JEE MAIN 2026

Which of the following best represents the temperature versus heat supplied graph for water, in the range of $-20^{\circ} \mathrm{C}$...

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Q JEE MAIN 2026

10 kg of ice at $-10^{\circ} \mathrm{C}$ is added to 100 kg of water to lower its temperature from $...

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Q JEE MAIN 2026

A brass wire of length 2 m and radius 1 mm at $27^{\circ} \mathrm{C}$ is held taut between two rigid...

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Q JEE MAIN 2026

Density of water at $4^{\circ} \mathrm{C}$ and $20^{\circ} \mathrm{C}$ are $1000 \mathrm{~kg} / \mathrm{m}^3$ and $998 \mathrm{~kg} / \mathrm{m}^3$ respectively....

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Q JEE MAIN 2026

A gas based geyser heats water flowing at the rate of 5.0 litres per minute from 27ºC to 87ºC. The...

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Q JEE MAIN 2019

One kg of water, at $20^{\circ} \mathrm{C}$, is heated in an electric kettle whose heating element has a mean (temperature...

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Q JEE MAIN 2019

Ice at $-20^{\circ} \mathrm{C}$ is added to 50 g of water at $40^{\circ} \mathrm{C}$. When the temperature of the mixture...

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Q JEE MAIN 2020

A bullet of mass 5 g , travelling with a speed of 210 $\mathrm{m} / \mathrm{s}$, strikes a fixed wooden...

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Q JEE-MAIN 2020

Two different wires having lengths $L_1$ and $L_2$, and respective temperature coefficient of linear expansion $\alpha_1$ and $\alpha_2$, are joined...

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Q JEE MAIN 2020

The specific heat of water $=4200 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$ and the latent heat of ice $...

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Q JEE MAIN 2019

A thermometer graduated according to a linear scale reads a value $x_0$ when in contact with boiling water, and $...

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Q JEE MAIN 2019

Two rods A and B of identical dimensions are at temperature 30°C. If A is heated upto 180°C and B...

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Q JEE MAIN 2019

When 100 g of a liquid A at 100°C is added to 50 g of a liquid B at temperature...

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Q JEE MAIN 2019

A metal ball of mass 0.1 kg is heated upto $500^{\circ} \mathrm{C}$ and dropped into a vessel of heat capacity...

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Q JEE-MAIN 2020

A calorimeter of water equivalent 20 g contains 180 g of water at $25^{\circ} \mathrm{C}$. ' m ' grams of...

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Q JEE MAIN 2020

Three containers $C_1, C_2$ and $C_3$ have water at different temperatures. The table below shows the final temperature $T$ when...

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Q JEE-MAIN 2020

A metallic sphere cools from 50°C to 40°C in 300 s. If atmospheric temperature around is 20°C, then the sphere’s...

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Q JEE MAIN 2019

A massless spring (k = 800 N/m), attached with a mass (500 g) is completely immersed in 1 kg of...

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Q JEE MAIN 2019

An unknown metal of mass 192 g heated to a temperature of 100°C was immersed into a brass calorimeter of...

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Q JEE-MAIN 2021

The height of victoria falls is 63 m. What is the difference in temperature of water at the top and...

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Q JEE MAIN 2019

A thermally insulated vessel contains 150 g of water at $0^{\circ} \mathrm{C}$. Then the air from the vessel is pumped...

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Q JEE-MAIN 2021

The temperature of equal masses of three different liquids x,y and z are 10ºC, 20ºC and 30ºC respectively. The temperature...

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Q JEE-MAIN 2021

A steel rod with $\mathrm{y}=2.0 \times 10^{11} \mathrm{Nm}^{-2}$ and $\alpha=10^{-5^{\circ}} \mathrm{C}^{-1}$ of length 4 m and area of cross-section 10...

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Q JEE-MAIN 2021

Due to cold weather a 1 m water pipe of cross–sectional area 1 cm2 is filled with ice at –10°C....

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Q JEE-MAIN 2021

Two different metal bodies A and B of equal mass are heated at a uniform rate under similar conditions. The...

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Q JEE MAIN 2021

The value of tension in a long thin metal wire has been changed from $\mathrm{T}_1$ to $\mathrm{T}_2$. The lengths of...

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Q JEE MAIN 2021

The length of a metal wire is $\ell_1$, when the tension in it is $\mathrm{T}_1$ and is $\ell_2$ when the...

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Q JEE MAIN 2021

Due to cold weather a 1 m water pipe of cross-sectional area $1 \mathrm{~cm}_2$ is filled with ice at $...

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Q JEE Main 2019

A rod, length $L$ at room temperature and uniform area of cross section $A$, is made of a metal having...

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Q JEE MAIN 2021

A bimetallic strip consists of metals A and B. It is mounted rigidly as shown. The metal A has higher...

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Q _JEE_MAIN_2021

Two identical metal wires of thermal conductivities K1 and K2 respectively are connected in series. The effective thermal conductivity of...

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Q JEE MAIN 2022

Resistance of the wire is measured as $2 \Omega$ and $3 \Omega$ at $10^{\circ} \mathrm{C}$ and $30^{\circ} \mathrm{C}$ respectively. Temperature...

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Q JEE MAIN 2022

A block of ice of mass 120 g at temperature 0°C is put in 300 gm of water at 25°C....

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Q JEE MAIN 2022

A unit scale is to be prepared whose length does not change with temperature and remains 20 cm , using...

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Q JEE MAIN 2022

A lead bullet penetrates into a solid object and melts. Assuming that 40% of its kinetic energy is used to...

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Q JEE MAIN 2022

At what temperature a gold ring of diameter 6.230 cm be heated so that it can be fitted on a...

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Q JEE MAIN 2022

A geyser heats water flowing at a rate of 2.0 kg per minute from $30^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C}$. If...

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Q JEE MAIN 2022

A 100 g of iron nail is hit by a 1.5 kg hammer striking at a velocity of $60 \mathrm{~ms}^{-1}$....

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Q JEE MAIN 2022

Two metallic blocks $\mathrm{M}_1$ and $\mathrm{M}_2$ of same area of cross-section are connected to each other (as shown in figure)....

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Q JEE MAIN 2022

A steam engine intakes 50 g of steam at $100^{\circ} \mathrm{C}$ per minute and cools it down to $20^{\circ} \mathrm{C}$....

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Q JEE MAIN 2022

Identify the pair of physical quantities which have different dimensions :

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Q JEE MAIN 2025

Water falls from a height of 200 m into a pool. Calculate the rise in temperature of the water assuming...

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Q JEE MAIN 2023

A hole is drilled in a metal sheet. At $27^{\circ} \mathrm{C}$, the diameter of hole is 5 cm . When...

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Q JEE MAIN 2025

Consider a rectangular sheet of solid material of length $l=9 \mathrm{~cm}$ and width $\mathrm{d}=4 \mathrm{~cm}$. The coefficient of linear expansion...

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Q JEE MAIN 2023

A faulty thermometer reads 5°C in melting ice and 95°C in steam. The correct temperature on absolute scale will be...

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Q JEE MAIN 2023

A hypothetical gas expands adiabatically such that its volume changes from 08 litres to 27 litres. If the ratio of...

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Q JEE MAIN_2023

Heat energy of 184 kJ is given to ice of mass 600 g at $-12^{\circ} \mathrm{C}$, Specific heat of ice...

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Q JEE MAIN_2023

C P and Q is shown in the figure. Between upper fixed point and lower fixed point there are 150...

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Q JEE MAIN 2023

Which one of the following is most likely a mismatch?

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Q JEE MAIN 2023

A Carnot engine operating between two reservoirs has efficiency $\frac{1}{3}$. When the temperature of cold reservoir raised by $x$, its...

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Q JEE MAIN 2023

On a temperature scale ‘X’. The boiling point of water is 65° X and the freezing point is –15°X. Assume...

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Q JEE MAIN 2023

A bowl filled with very hot soup cools from 98°C to 86°C in 2 minutes when the room temperature is...

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Q JEE MAIN 2023

Heat is given to an ideal gas in an isothermal process. A. Internal energy of the gas will decrease. B....

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Q JEE MAIN 2023

The pressure of a gas changes linearly with volume from A to B as shown in figure. If no heat...

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Q JEE MAIN 2023

The pressure (P) and temperature (T) relationship of an ideal gas obeys the equation PT2 = constant. The volume expansion...

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Q JEE MAIN

A clock has 75" " cm,60" " cm long second hand and minute hand respectively. In 30 minutes duration the...

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Q JEE MAIN 2024

On celcius scale the temperature of body increases by 40ºC. The increase in temperature on Fahrenheit scale is:

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Q JEE MAIN 2025

Which of the following figure represents the relation between Celsius and Fahrenheit temperatures?

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Q JEE MAIN 2025

A gun fires a lead bullet of temperature 300 K into a wooden block. The bullet having melting temperature of...

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