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Subject: Physics, asked on 13/5/16

In determination of acceleration due to gravity (g) using the formula T= 2π×√(L/g) the error's in measurement of L and T are 1% and 2% respectively. The maximum percentage error in the value of g is? (Answer: 5%)

Subject: Physics, asked on 26/1/18

Q. For given figure mA is 30 kg mB=mC = 5 kg respectively. All contact surfaces are smooth. 
(g = 10m/s2). Select the correct statements. 

(A) Acceleration of block A, B and C are 1 m/s2, 3 m/s2and 5 m/s2 respectively 
(B) Contact force between B & Ground is 350 N 
(C) Tension in string 30N 
(D) Contact force between 'B' and 'C' is 15 N 

Subject: Physics, asked on 29/5/12

The velocity of a particle moving in straight line depends on its position as v= 3sin [(pi /2) + x ] m/s. Find the acceleration of the particle when at x = pi / 4. (Ans : -9/2 m/s)

Subject: Physics, asked on 5/1/15

A resonance tube is resonated with a tuning fork of frequency 256 Hz . if the length of resonating air columns 32 cm and 100cm , then end correction will be

Subject: Physics, asked on 26/9/15

two cars start from same point on straight road due north . while car A starts with initial velocity of 10 m/s and acceleration of 1 m/s2 , car B starts from rest with acceleration of 2 m/s2
1)as seen by passenger in car A
a) first , car B moves backward and then forward
b)first , car B moves forward and then backward

Subject: Physics, asked on 28/1/17

In CGS system, the value of stefan's constant is 5.67x10-5 erg s-1 cm-2K-4. How to write its value in SI units

Subject: Physics, asked on 3/4/12

what is Weber and Weber/m2 is equal to?

Subject: Physics, asked on 12/8/13

A police constable is chasing a thief who is initially 10m ahead of the constable.The uniform speeds of the constable and the thief are 10m/s and 8 m/s respectively.From the plot of the position time graph for the constable and the thief ,find the time the constable will take to catch the thief and the distance the constable has to run.

Subject: Physics, asked on 27/11/15

Block A of mass 2m,B and C each of mass m are in equilibrium at rest as shown in figure.Assume the spring balance,pulley and string to be ideal.Now,an additional force mg is applied on block C in downward direction .Find the new reading of the spring balance
(a) 5/2 mg (b) 5/3 mg (c) 5/4 mg (d) None of these

Subject: Physics, asked on 15/6/18

Q10.
Ans key: 1
10. A particle is moving on a circle of radius 1 km with constant speed 10 π m/s. Find the change in velocity  vector of particle in a time duration of 1 second (in m/s). (change is velocity = vf→ - vi→ )

Subject: Physics, asked on 22/8/14

A body moving with uniform acceleration has a velocity of -11 cm/s when its x coordinate is 3.00 cm. If itsx coordinate 2 s later is -5 cm, what is the magnitude in cm/square of its acceleration?

Subject: Physics, asked on 19/10/19

Which of the following mass measurements is most accurate and why?
a)5.00 kg (b)5.004kg (c)5.01kg

Subject: Physics, asked on 27/6/15

a cricket ball moving along ground in straight line goes past yuvrajat a constant speed of 5 m/s. yuvraj starts from rest and accelerates at aconstant rate of 2 m/ s2at the instant ball crosses him . find the speed of yuvraj.
fast please

Subject: Physics, asked on 26/9/15

a person can swim in still water at speed 5 m/s . how much time will he take to move a distance of 120 m in upstream of water flowing at 1 m/s upstream and downstream respectively/

Subject: Physics, asked on 15/5/15

A ball A is thrown up vertically with speed u. At the same time instant another ball B is released from rest at a height h vertically above the point of projection of A. Taking the moment of projection as t=0 and acc=g find. a)At any time t, magnitude of relative acc of A with respect to B.b)The speed of A relative to B is.c)The separation between the bodies. Ans is-a)0 b)u c)h-ut

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