Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
283.5N
975.0N
216.5N
716.5N
Correct answer is D
The forces opposing the motion of the device are "mgsin θ" and "μN" where N is the normal reaction
From the diagram, on resolving to components, N = mgcos θ
Total opposing force = mgsin θ + μmgcos θ = mg(sin θ + μcos θ)
= 100 × 10 × (sin 30° + 0.25 × cos 30°)
= 1000 × (0.5 + 0.2165)
= 1000 × 0.7165
= 716.5 N
The most appropriate value of fuse for a kettle rated 220 V, 1.06 kW is
3A
6A
5A
4A
Correct answer is C
V = 220V, P = 1.60KW = 1060W, I = ?
P = IV
I = \(\frac{P}{V} = \frac{1060}{220}\)
≈ 5A.
An atom in an excited state is one whose
electrons are in the conduction band.
potential energy is minimum.
potential energy is maximum.
electrons have moved to a higher energy level.
Correct answer is D
An atom in an excited state is one whose electrons have moved to a higher energy level.
In an atom, electrons are typically found in specific energy levels or orbitals. When an electron absorbs energy, it can move from a lower energy level to a higher energy level, which is referred to as an excited state. In this higher energy state, the electron is farther from the nucleus and has more potential energy. When the electron returns to its lower energy level, it emits the excess energy as electromagnetic radiation, often in the form of visible light. This is what gives rise to the characteristic spectral lines observed in spectroscopy.
\(\frac{\sqrt{GR}}{2}\)
\(\frac{\sqrt{2GM}}{R}\)
\(\frac{\sqrt{2G}}{R}\)
\(\frac{\sqrt{GM}}{R}\)
Correct answer is B
The expression for the escape velocity \(v_e\) of an object from a planet of mass M and radius R using the universal gravitational constant G is:
\(v_e = \frac{\sqrt{2GM}}{R}\)
Increasing the frequency of a sound wave produces a sound with
higher pitch
longer wavelength
more overtones
reduced loudness
Correct answer is A
The pitch of a sound is determined by its frequency. Higher frequencies correspond to higher pitches. For example, a high-pitched sound like a whistle has a higher frequency than a low-pitched sound like a drum.
Indorama Eleme Fertilizer & Chemicals Limited (IEFCL) Graduate Engineer Internship Program 2024
Diploma Engineer Internship Program at Indorama Eleme Fertilizer & Chemicals Limited (IEFCL)
Admin Officer - Airline Industry at Ascentech Services Limited
Area Sales Manager at Airtel Nigeria
State Business Manager at Airtel Nigeria
Inventory Manager at a Reputable Agricultural Company
Supply Chain Officer at Kellogg's Tolaram Nigeria Limited (KTNL)
Warehouse Manager at Shulifang Biotechnology FZE
Capability Development & Execution Excellence Manager (Rivers) at Airtel Nigeria
Regional Security Manager - Northeast Region at Airtel Nigeria
