Loading....
|
Press & Hold to Drag Around |
|||
|
Click Here to Close |
|||
Question 2 Report
Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V.
Answer Details
Question 3 Report
A body executing simple harmonic motion has an angular speed of 2π radians. Its period of oscillation is (π 3.14).
Answer Details
Question 4 Report
In the electrical method of making a magnet, the polar the magnet formed depends on the
Answer Details
Question 5 Report
Two images Y and X are formed by a plane mirror and a convex mirror respectively. Which of the following is correct about their characteristics?
Answer Details
Question 6 Report
The defect of the eye lens which occurs as a result of weak ciliary muscles is called
Question 7 Report
Inertia is the property of a body which makes the body to
Question 8 Report
Which of the following statements about the pressure in a liquid is NOT correct? It
Question 10 Report
The space between the two walls of a vacuum flask is completely evacuated to reduce heat loss by
Answer Details
Question 11 Report
Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane?
Question 12 Report
A plane progressive wave is represented by the equation y = 0.2sin (200πt - 0.5.x) where x and y are measured in cm and t in s. What is the frequency of the wave?
Answer Details
Question 13 Report
Which of the following pairs of phenomena helps in the resolution of the wave-particle paradox of matter?
Answer Details
Question 15 Report
A stone is thrown with a speed of 10ms at an angle of 30° to the horizontal, Calculate its time of flight, (g = 10ms2)
Answer Details
Question 16 Report
Determine the value of x from the nuclear reaction below,
\(^{222}_{86}Rn\) → \(^{x}_{88}Ra\) + 2β + energy
Question 17 Report
Which of the following cells does not require a dipolar for effective and efficient delivery of current?
Answer Details
Question 18 Report
A ball of mass 100g falls from a height of 5m onto a concrete floor and rebounds to a height of 3m. Calculate the energy lost. (g = 10ms-2)
Question 19 Report
A transformer has an efficiency of 92.5%. the ratio number of turns in the primary coil to that in the secondary coil is 128 : 45. If the current passing through the secondary coil is 9.0A, calculate the current passing through the primary-coil.
Answer Details
Question 21 Report
The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth?
Answer Details
Question 22 Report
Two forces of magnitude 8N and 4N act at right angle to each other. The angle between the resultant and the 8N force is
Answer Details
Question 23 Report
A projectile attains its maximum height when the angle of projection is
Question 24 Report
An observer heard the sound of thunder 5.8s after the lightning flash was seen. How far was he from the source? [Speed of sound in air = 330ms-1]
Answer Details
Question 27 Report
The phenomenon of photoelectric effect is used in the following EXCEPT
Answer Details
Question 28 Report
Which of the following statements is correct about light and sound waves? Both
Answer Details
Question 29 Report
A ball of mass 0.1kg moving with velocity of 20ms-1 is hit by a force which acts on it for 0.02s. If the ball moves off in the opposite direction with a velocity of 25ms-1 , calculate the magnitude of the force.
Answer Details
Question 30 Report
Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg-1 . Specific heat capacity of water 4.2Jg-1 K-1]
Answer Details
Question 31 Report
An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as
Answer Details
Question 32 Report
Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then
Answer Details
Question 33 Report
Arrange the following in the order of their increasing frequency.
I. Visible light
II. Gamma rays
III. Radio waves
IV. Infra-red radiation
V. Ultra-violet radiation
Question 34 Report
Which of the following statements is correct about volatile liquids? They have
Answer Details
Question 36 Report
Which of the following substances undergoes sublimation?
Question 37 Report
Which of the following phenomena is responsible for the spherical shape of soap bubbles?
Answer Details
Question 38 Report
The electric potential at a distance d from a point charge q in air of permittivity eo is expressed as?
Answer Details
Question 39 Report
Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is
Answer Details
Question 40 Report
Which of the following pairs of musical instruments produce sound due to the vibration of air column?
Answer Details
Question 41 Report
The work done in extending a spring by 40 mm is 1.52J. Calculate the elastic constant of the spring.
Answer Details
Question 42 Report
A sound wave from a ship is received 8.4s later. What is the depth of the sea? [Speed of sound in water 1500ms-1]
Answer Details
Question 43 Report
An object of mass 2kg moves for 5s with a uniform velocity of 10ms. What is the magnitude of its acceleration in ms-2
?
Answer Details
Question 44 Report
An immersion heater is rated 1500W. How long does it take the heater to raise the temperature of 1 kg of water by 30°C? (Assume heat lost to the surrounding is negligible, Specific heat capacity of water 4200Jkg-1K-1)
Answer Details
Question 45 Report
When a resistor of resistance R is connected across a.c. the terminal p.d. of the cell is reduced to three-quart its e.m.f. The cell’s internal resistance in terms of R is
Answer Details
Would you like to proceed with this action?