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Tambaya 1 Rahoto
When a current of 1 .0A flows in an electrolyte for 3.0h, a mass of 1 .0g is deposited. What mass will be deposited in 10.0h if a current of 3.0A flows through the electrolyte?
Bayanin Amsa
Tambaya 2 Rahoto
If the temperature of a resistance wire is gradually increased, its resistance will
Bayanin Amsa
Tambaya 3 Rahoto
The ability of the eye to focus on objects at various distances is known as
Tambaya 4 Rahoto
If the size of the hole of a pinhole camera is increased, the image formed becomes
Bayanin Amsa
Tambaya 6 Rahoto
The use of electrical fuses in domestic wiring is
Tambaya 7 Rahoto
Which is a fundamental unit?
Tambaya 10 Rahoto
Which radiation is emitted when a beam of fast moving cathode rays is stopped by a heavy element?
Bayanin Amsa
Tambaya 11 Rahoto
A man stands in front f a high wall and produces a sound. If he receives the echo of the sound four seconds later, what is his distance from the wall? [The speed of sound in air is 330ms-1]
Bayanin Amsa
Tambaya 12 Rahoto
According to the Kinetic Theory, what does NOT occur when the temperature of a constant volume of gas is increased?
Bayanin Amsa
Tambaya 13 Rahoto
An object 8cm in front of a plane mirror moves at a speed of 6cm s-1 away from the mirror. What will be the distance separating the object and the image after 2s?
Bayanin Amsa
Tambaya 14 Rahoto
A negatively charged rod is brought near the cap of an electroscope. The cap is earthed momentarily while the charge is near to it. The rod is then removed. Which statement is correct?
Bayanin Amsa
Tambaya 16 Rahoto
An a.c. generator can be converted into a d.c. generator by replacing
Bayanin Amsa
Tambaya 17 Rahoto
An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours?
Bayanin Amsa
Tambaya 19 Rahoto
Which colour is deviated least when white light passes through a triangular prism?
Tambaya 20 Rahoto
A converging lens of focal length 5cm forms a virtual image which is 20cm from the lens. How far from the lens is the object?
Bayanin Amsa
Tambaya 21 Rahoto
It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the
Bayanin Amsa
Tambaya 23 Rahoto
Which of the following is/are TRUE of nuclear fission?
I. A heavy nucleus is split into two nuclei of comparable masses.
II. Two light nuclei are joined together to form a heavier nucleus.
III. The total mass of the products is less than that of the reactants.
Bayanin Amsa
Tambaya 24 Rahoto
In an operating X-ray tube, a high p.d is applied between the cathode and the anode for the purpose of
Bayanin Amsa
Tambaya 26 Rahoto
What part of the camera corresponds to the iris of the eye?
Tambaya 27 Rahoto
A body of mass 4 kg is accelerated from rest by a steady force of 9N. What is its speed when it has travelled a distance of 8m?
Tambaya 28 Rahoto
A block of ice of mass 10kg at 0°C absorbs heat energy from its surroundings and changes to water at the same temperature. The heat absorbed is referred to as
Bayanin Amsa
Tambaya 30 Rahoto
In which of the following are the substances arranged in descending order of their thermal conductivities?
Bayanin Amsa
Tambaya 31 Rahoto
An air bubble of volume 4cm3 is formed 20m under water. What will be its volume when it rises to just below the surface of the water if the atmospheric pressure is equivalent to a height of 10cm of water?
Bayanin Amsa
Tambaya 32 Rahoto
An object is projected with a velocity of 50ms-1 from ground level at an angle θ to the vertical. If the total time of flight of the projectile is 5s, what is the value of θ? (g = 10ms-2)
Bayanin Amsa
Tambaya 33 Rahoto
A short response time is obtained in a liquid-in-glass thermometer when the
Tambaya 34 Rahoto
A body executing a simple harmonic motion has an angular velocity of 22 radians per second. If it has a maximum
Bayanin Amsa
Tambaya 35 Rahoto
A brass cube of side 10cm is heated through 30°C. If the linear expansivity of brass is 2.0 × I0\(^{-5}\) K-1 , what is the increase in its volume?
Bayanin Amsa
Tambaya 37 Rahoto
What is the escape velocity of a satellite launched from the earth’s surface? (Take g as 10ms-2 and the radius of the earth as 6.4 × 106m)
Bayanin Amsa
Tambaya 38 Rahoto
The energy stored in a capacitor of capacitance 5 μF is 40J. What is the voltage applied across its terminals?
Tambaya 39 Rahoto
A platinum-resistance thermometer has a resistance of 10 ω at 0°C and 18 ω at 100°C. Assuming that resistance changes uniformly with temperature, what is the resistance of the thermometer when the temperature is 45°C?
Tambaya 40 Rahoto
The wavelength of a stationary wave is 36.0cm. What is the distance between a node and the next anti-node?
Bayanin Amsa
Tambaya 41 Rahoto
The phenomenon of photoelectric effect is NOT used in
Tambaya 42 Rahoto
Which device does NOT make use of the magnetic effects of an electric current?
Tambaya 43 Rahoto
Which statement is NOT correct about Rutherford’s model of the atom?
Tambaya 44 Rahoto
In which simple machine is the effort applied between the load and the fulcrum?
Bayanin Amsa
Tambaya 45 Rahoto
If the refractive index of water is 1.33, what is the critical angle for a water-air boundary?
Tambaya 46 Rahoto
A body of mass M1 moving with a velocity U collides with a stationary body of mass M2 and both move with a common velocity V. If linear momentum is conserved, which expression correctly represents V?
Bayanin Amsa
Tambaya 47 Rahoto
A body is uniformly accelerated from rest. Which of the following quantities vary/varies linearly with the square of the time?
I. Displacement
II. Velocity
III. Momentum
Bayanin Amsa
Tambaya 48 Rahoto
An object weighing 0.60N is hung on a spiral spring and caused it to extend by 6.0cm. The object is removed and a black of wood replacing it causes the spring to extend by 10.0cm. What is the weight of the block of wood?
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