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WorksheetsNIP QUIZ 1 PHYSICS
Total questions: 41
Worksheet time: 21mins
A particle moves with a constant acceleration of 2 m/s². If its initial velocity is 5 m/s, what is its velocity after 3 seconds?
11 m/s
6 m/s
9 m/s
15 m/s
A car of mass 1000 kg accelerates from rest to 20 m/s in 8 seconds. What is the average power developed by the engine?
25,000 W
20,000 W
12,500 W
10,000 W
A ball is thrown vertically upward with initial speed 30 m/s. How long does it take to reach the highest point? (Take g = 10 m/s²)
3 s
6 s
9 s
30 s
A block slides down a frictionless incline of height 5 m. What is the velocity of the block at the bottom? (g = 10 m/s²)
10 m/s
5 m/s
15 m/s
20 m/s
A force F acts on a body of mass m producing acceleration a. If the force doubles and mass halves, what is the new acceleration?
a/4
4a
2a
a/2
An object of mass 2 kg is raised through height 10 m. What is the work done against gravity? (g=10 m/s²)
200 J
20 J
100 J
10 J
A machine does 600 J of work in 5 seconds. What is its power output?
120 W
600 W
3000 W
5 W
The kinetic energy of a body is 200 J when moving at 10 m/s. What is its mass?
4 kg
2 kg
10 kg
20 kg
A cube of volume 0.01 m³ is submerged in water (density 1000 kg/m³). What is the buoyant force on it? (Take g = 10 m/s²)
100 N
10 N
1 N
1000 N
A liquid exerts a pressure of 2×10⁴ Pa at depth 2 m. What is the density of the liquid? (g=10 m/s²)
1000 kg/m³
2000 kg/m³
500 kg/m³
4000 kg/m³
If 500 J of heat is supplied to a gas and it does 200 J of work, what is the change in internal energy?
+300 J
-300 J
+700 J
-700 J
A gas expands from 0.01 m³ to 0.03 m³ against external pressure of 2000 Pa. What is the work done by the gas?
40 J
60 J
4 J
6 J
A pendulum completes 20 oscillations in 40 seconds. What is its frequency?
0.5 Hz
2 Hz
20 Hz
0.05 Hz
A wave has a wavelength of 0.5 m and frequency 4 Hz. What is the speed of the wave?
2 m/s
8 m/s
0.125 m/s
1 m/s
A 12 V battery is connected to a resistor of 6 Ω. What is the current through the resistor?
2 A
0.5 A
72 A
18 A
Two resistors 4 Ω and 6 Ω are connected in series. What is the total resistance?
10 Ω
2.4 Ω
24 Ω
0.4 Ω
A capacitor charges to 9 V when connected to a 12 V supply. Which of the following is true?
The capacitor is fully charged
It is charging
It is discharging
Voltage becomes 0 V
The work function of a metal is 2 eV. What is the minimum frequency of light needed to eject photoelectrons? (Planck constant h=6.63×10−34Js , 1 eV = 1.6×10−19J )
4.8 × 1014 Hz
3.2×1014Hz
2.4 × 1014 Hz
6.0 × 1014 Hz
Which of the following best explains the photoelectric effect?
A) Light behaves purely as waves
B) Light energy is quantized into photons
C) Electrons gain energy from continuous light waves
D) Electrons are emitted randomly regardless of light frequency
A satellite orbits Earth at a height where gravitational acceleration is 6 m/s². If radius of Earth is 6.4×10^6 m, what is the satellite's height above Earth's surface? (gE = 10 m/s²)
6.4×10^6 m
3.2×10^6 m
1.28×10^6 m
9.6×10^6 m
In a transformer, if the primary coil voltage is 240 V and has 200 turns, and the secondary coil has 100 turns, what is the output voltage?
480 V
120 V
100 V
50 V
A wire of length 2 m and cross-sectional area 1 mm² has resistance 0.5 Ω. What is the resistivity of the wire?
2.5×10−8
5×10−8
1×10−8
1×10−7
An object moves in a circular path of radius 1 m with speed 4 m/s. What is its centripetal acceleration?
16 m/s²
4 m/s²
8 m/s²
2 m/s²
Two point charges of +3 C and -3 C are 2 m apart. What is the magnitude of the force between them? (k = 9×109 Nm2/C2 )
20 N
60 N
27 N
81 N
The half-life of a radioactive element is 3 hours. What fraction remains after 9 hours?
½
¼
1/16
1/8
A graph of displacement against time is a straight line. What type of motion is this?
Uniform acceleration
Uniform velocity
Oscillatory motion
Random motion
A block attached to a spring oscillates with frequency 2 Hz. What is the time period?
0.5 s
2 s
4 s
8 s
A wave travels with frequency 500 Hz and velocity 340 m/s. What is its wavelength?
0.68 m
1.47 m
680 m
0.085 m
Two resistors of 2 Ω and 3 Ω are connected in parallel. What is the total resistance?
6 Ω
5 Ω
1.2 Ω
0.83 Ω
An object is dropped from height 80 m. What is its velocity just before impact? (g=10 m/s²)
40 m/s
20 m/s
80 m/s
10 m/s
Electric power dissipated in a 10 Ω resistor carrying 2 A current is:
20 W
40 W
10 W
4 W
The time period of simple harmonic motion increases when:
The frequency increases
The frequency decreases
The amplitude increases
The acceleration increases
The efficiency of a machine is 75%. If input work is 200 J, what is the useful work done?
150 J
75 J
100 J
250 J
What is the SI unit of magnetic flux?
Tesla
Weber
Newton
Coulomb
The force between two charges doubles when the distance between them:
Is doubled
Is halved
Is quadrupled
Remains same
Recheck question for Q4 correct. Options seem too large; correct value is 0.02025 N. Choose nearest: This question needs checking. I'll revise: New options: A) 0.02 N B) 0.06 N C) 0.03 N D) 0.01 N.
0.02 N
0.06 N
0.03 N
0.01 N
A current of 3 A flows through a wire for 10 seconds. How much charge passes through the wire?
30 C
10 C
3 C
13 C
In photoelectric effect, increasing the intensity of incident light:
Increases energy of emitted electrons
Increases number of emitted electrons
Decreases number of emitted electrons
Has no effect
The pressure at the bottom of a 5 m deep lake is 6×10⁴ Pa. What is the atmospheric pressure above the lake? (Density of water = 1000 kg/m³, g=10 m/s²)
1×10⁴ Pa
4×10⁴ Pa
2×10⁴ Pa
0 Pa
A ray of light passes from air into glass with refractive index 1.5. What happens to the speed of light in glass?
It increases 1.5 times
It decreases by 1.5 times
It remains constant
It becomes zero
The energy levels of a hydrogen atom are given by E = -13.6 / n² eV. What is the energy difference between n=1 and n=2?
(a)
