Physics Test

Result

Physics Test - 4

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Weekly Quiz Competition

Question 1
3 / -1

A particle executing S.H.M. has velocities 20cm/s, 16 cm/s at displacements 4 cm. and 5cm from its mean position respectively. Its time period is

A

B

C

D
Question 2
3 / -1

The length of a wire of cross-sectional area 1 x 10^-6 m² is 10m. The Young's modulus of the material of the wire is 25 GPa. When the wire is subjected to a tensile force of 100N, the elongation produced is ______mm.

A
40.00

B
42.00

C
41.00

D
45.00
Question 3
3 / -1

A capillary tube is immersed in water and the mass of water that rises in the capillary tube is M. If another tube of double the radius is immersed then the mass of water that will rise in the capillary tube is _______M.

A
1.00

B
2.00

C
3.00

D
5.00
Question 4
3 / -1

At 17ºC one gram mole of hydrogen is enclosed in a cylinder by means of a tight Piston. The external pressure on the piston is kept constant at 2 atm. The initial volume of the gas is 2 x 10^-3m³. If the increase in volume is 15%, the external work done is _______J, (1 atm = 1.02 x 10⁵ Pa)

A
60.69

B
60.68

C
60.70

D
60.67
Question 5
3 / -1

The molecules of a given mass of a gas have a r.m.s., velocity of 200 m / sec at 27°C and 1.0 × 10⁵ N/m² pressure. When the temperature is 127°C and pressure is 0.5 × 10⁵ N/m². The r.m.s velocity in m / sec will be

A

B

C

D
400
Question 6
3 / -1

Four point charges are located at the corners of a square ABCD of side 0.1 m. What is the force on a charge of 1 μC placed at the centre of the square?

A
5 N

B
4 N

C
3 N

D
0 N
Question 7
3 / -1

An infinite non-conducting sheet has a surface charge density 2 × 10^-7 C/m² on one side. The distance between two equipotential surfaces whose potential differ by 90 V is

A

B

C

D
Question 8
3 / -1

A uniform conductor of resistance R is cut into 20 equal pieces. Half of them are joined in series and the remaining half of them are connected in parallel. If the two combinations are joined in series, the effective resistance of all the pieces is

A
R

B
R/2

C

D
Question 9
3 / -1

The intensity of magnetic induction at the centre of a current-carrying circular coil is B₁ and at a point on its axis at a distance equal to its radius from the centre is B₂, then B₁/B₂ is

A

B

C

D
Question 10
3 / -1

Two magnetic poles are separated by a distance d in vacuum and exert a force F on each other. If half the distance is filled with a medium of μ_r = 9, the force between the poles will be

A

B

C
4F

D
F