Practice Set 1
Consider a sample of oxygen behaving like an ideal gas. At 300 K, the ratio of root mean square (rms) velocity to the average velocity of gas molecule would be : (Molecular weight of oxygen is 32 g/mol; R = 8.3 J K^–1 mol^–1
29
Sep
Consider a sample of oxygen behaving like an ideal gas. At 300 K, the ratio of root mean square (rms) velocity to the average velocity of gas molecule would be : (Molecular weight of oxygen is 32 g/mol; R = 8.3 J K^–1 mol^–1 Consider a sample of oxygen behaving like an ideal gas. At [...]
An ideal gas in a cylinder is separated by a piston in such a way that the entropy of one part is S1 and that of the other part is S2. Given that S1 > S2. If the piston is removed then the total entropy of the system will be :
29
Sep
An ideal gas in a cylinder is separated by a piston in such a way that the entropy of one part is S1 and that of the other part is S2. Given that S1 > S2. If the piston is removed then the total entropy of the system will be : Match List - I [...]
A particle of mass m moves in a circular orbit under the central potential field, U(r) = −C/r, where C is a positive constant. The correct radius – velocity graph of the particle’s motion is :
29
Sep
A particle of mass m moves in a circular orbit under the central potential field, U(r) = −C/r, where C is a positive constant. The correct radius – velocity graph of the particle’s motion is : A particle of mass m moves in a circular orbit under the central potential field U(r) = −C/r where [...]
The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is
29
Sep
The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is inductance L is connected to a battery is The time taken for the magnetic energy to reach 25% of its maximum value when a solenoid of resistance [...]
Three rays of light, namely red (R), green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in figure. The refractive indices of the material of the prism for red, green and blue wavelength are 1.27, 1.42 and 1.49 respectively. The colour of the ray(s) emerging out of the face PR is :
29
Sep
Three rays of light, namely red (R), green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in figure. The refractive indices of the material of the prism for red, green and blue wavelength are 1.27, 1.42 and 1.49 respectively. The colour of the ray(s) emerging [...]
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1.42 and 1.49 respectively. The colour of the ray(s) emerging out of the face PR is : ,
green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in figure. The refractive indices of the material of the prism for red ,
green and blue wavelength are 1.27 ,
namely red (R) ,
Three rays of light ,
If the angular velocity of earth’s spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately : (Take : g = 10 ms^–2, the radius of earth, R = 6400 × 10^3 m, Take π = 3.14)
29
Sep
If the angular velocity of earth’s spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately : (Take : g = 10 ms^–2, the radius of earth, R = 6400 × 10^3 m, Take π = 3.14) If the angular velocity of earth's spin is [...]
The decay of a portion to neutron is:
29
Sep
The decay of a portion to neutron is: The decay of a portion to neutron is: September 29, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
In a series LCR circuit, the inductive reactance (XL) is 10 Ω and the capacitive reactance (XC) is 4 Ω. The resistance (R) in the circuit is 6 Ω. The power factor of the circuit is :
29
Sep
In a series LCR circuit, the inductive reactance (XL) is 10 Ω and the capacitive reactance (XC) is 4 Ω. The resistance (R) in the circuit is 6 Ω. The power factor of the circuit is : In a series LCR circuit the inductive reactance (XL) is 10 Ω and the capacitive reactance (XC) is [...]
The correct relationship between alpha (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is:
29
Sep
The correct relationship between alpha (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is: The correct relationship between alpha (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is: September 29, 2021 Category: JEE [...]
The velocity-displacement graph of a particle is shown in the figure. The acceleration-displacement graph of the same particle is represented by :
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Sep
The velocity-displacement graph of a particle is shown in the figure. The acceleration-displacement graph of the same particle is represented by : The velocity-displacement graph of a particle is shown in the figure. The acceleration-displacement graph of the same particle is represented by : September 29, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions [...]