[NEET-2020 ] a. 2.25×10^15 b. 25×10^6 c. 2.5×19^-6 d. 2.25 ×10^-15
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A monoatomic gas at pressure P, having volume V expands isothermally to a volume 2V &then adiabatically to volume 16V. The final pressure of gas is ..( take gamma =5/3)
[AIPMT 2014] a. 64 P b. 32 P c. P/64 d. 16 P Solution:
A missile is fired for a maximum range with an initial velocity of 20 m/s, the range of a missile is
[NEET-2011] a. 40m b. 50m c. 60m d. 20m The range of a projectile can be given as
Dimensions of stress are
[ NEET 2020 ]
In Young’s double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :
[NEET 2020] (a) double (b) half (c) four times (d) one-fourth
A ball is moving with a velocity 2 m/s collide head on with another stationary ball of double mass if the coefficient of restitution is 0.5 then their velocities, (m/s ) After collision will be
[CBSE-PMT-2010] (a) 0 , 1 (b) 1 , 1 (c) 1 , 0.5 (d) 0 , 2
1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear reaction. The energy released is
[EAMCET (Med.) 1995; CPMT 1999] (a) 63 * 10 7 J (b) 63 * 10 10 J (c) 63 * 10 14 J (d) 63 * 10 20 J
The Ratio Of Emissive Power Of Perfectly Black Body At 1327 Degree C And 527 Degree C Is
(a) 4:1 (b)16:1 (c) 2:1 (d) 8:1
A Wire Of Length L, Area Of Cross Section A Is Hanging From A Fixed Support. The Length Of The Wire Changes To L1 When Mass M Is Suspended From Its Free End. The Expression For Young’s Modulus Is :
(a) MgL1 / AL (b) Mg(L1 -L)/ AL (c) MgL / AL1 (d) MgL / A(L1 -L)
In A Guitar, Two Strings A And B Made Of Same Material Are Slightly Out Of Tune And Produce Beats Of Frequency 6 Hz. When Tension In B Is Slightly Decreased, The Beat Frequency Increases To 7 Hz. If The Frequency Of A Is 530 Hz, The Original Frequency Of B Will Be
[NEET-2020] (a) 523 Hz (b) 524 Hz (c) 536 Hz (d) 537 Hz
A 40 Micro Farad Capacitor Is Connected To A 200 V, 50 Hz Ac Supply. The Rms Value Of The Current In The Circuit Is, Nearly
[ NEET 2020] (a) 1.7 A (b) 2.05 A (c) 2.5 A (d) 25.1 A
If A Given Mass Of Gas Occupies A Volume Of 10 cc At 1 Atmospheric Pressure And Temperature Of 100°C (373.15 K). What Will Be Its Volume At 4 Atmospheric Pressure; The Temperature Being The Same
[NCERT 1977] 100 cc (b) 400 cc (c) 2.5 cc (d) 104 cc
At Constant Temperature On Increasing The Pressure Of A Gas By 5% Will Decrease Its Volume By
[MP PET 2002] (a) 5% (b) 5.26% (c)4.26% (d) 4.76%
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In a potentiometer circuit, a cell of EMF 1.5 V gives a balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell, then at what length of the wire, does the balance point occur?
In a potentiometer circuit, a cell of EMF 1.5 V gives a balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the fi...