Objective Questions

Questions (947)

#	Question	Topic	Actions
901	The critical angle for glass is 41°. Light travelling into glass from air has a…	PHY 104 Past Questions	View
902	The Q-factor of a sonometer wire of frequency 600 Hz is 8000. What is the time …	PHY 104 Past Questions	View
903	The reaction represented by the equation ²¹⁰Po → ²⁰⁶Pb + ______ is an example of	PHY 104 Past Questions	View
904	What principle is responsible for light spreading as it passes through a narrow…	PHY 104 Past Questions	View
905	A thin converging lens is used to produce, on a screen, a focused image of a ca…	PHY 104 Past Questions	View
906	A block of mass 0.2 kg which slides without friction on a 30° incline is connec…	PHY 104 Past Questions	View
907	Total internal reflection cannot occur when light travels from	PHY 104 Past Questions	View
908	An observer standing at sea coast observes 54 waves reaching the coast per minu…	PHY 104 Past Questions	View
909	An FM radio transmitter has a power output of 100 kW and operates at a frequenc…	PHY 104 Past Questions	View
910	The average counting rate recorded by a detector fixed in front of an alpha par…	PHY 104 Past Questions	View
911	If a photo-emissive surface has a threshold wavelength of 0.65 µm, calculate th…	PHY 104 Past Questions	View
912	A simple pendulum attached to the ceiling of a stationary lift has a time perio…	PHY 104 Past Questions	View
913	Rutherford carried out experiments in which a beam of alpha particles was direc…	PHY 104 Past Questions	View
914	A body sends waves 100 mm long through medium A and 0.25 m long in medium B. If…	PHY 104 Past Questions	View
915	Compared with alpha particles and gamma rays, beta particles	PHY 104 Past Questions	View
916	Two light sources are said to be coherent if they	PHY 104 Past Questions	View
917	The following are examples of longitudinal waves except	PHY 104 Past Questions	View
918	The displacement of a particle along the x-axis is given by x = a sin²(ωt). The…	PHY 104 Past Questions	View
919	Light has wavelength 600 nm in a vacuum. It passes into glass, which has an ind…	PHY 104 Past Questions	View
920	The emission spectrum of gold shows a line of wavelength 2.676 × 10⁻⁷ m. How mu…	PHY 104 Past Questions	View
921	A radioactive nucleus emits an alpha particle. What happens to the proton numbe…	PHY 104 Past Questions	View
922	Experiments performed with light indicate that light exhibits	PHY 104 Past Questions	View
923	If the wavelength of a beam of radiated X-ray is 0.62 Å, what is the value of t…	PHY 104 Past Questions	View
924	A string has mass 2.5 g and length 0.75 m under tension force of 50 N. Calculat…	PHY 104 Past Questions	View
925	Two in-phase sound waves with the same amplitude and frequency arrive at the sa…	PHY 104 Past Questions	View
926	Given that a wave is described by the equation y = sin 2(0.5t - x + π), calcula…	PHY 104 Past Questions	View
927	Light of wavelength 575 nm falls on a double-slit and the third order bright fr…	PHY 104 Past Questions	View
928	Uranium is represented as ²³⁹₉₂U. Which of the option below could be an isotope…	PHY 104 Past Questions	View
929	This reaction ²¹⁰Po → ²⁰⁶Pb + ______ is an example of	PHY 104 Past Questions	View
930	On a clear day, the sky appears to be more blue toward the zenith (overhead) th…	PHY 104 Past Questions	View
931	Why are some radioactive sources stored in boxes made from lead?	PHY 104 Past Questions	View
932	When photons with an energy of 3.0 eV strike a photoelectric surface the maximu…	PHY 104 Past Questions	View
933	What is the width of a single slit through which 610-nm orange light passes to …	PHY 104 Past Questions	View
934	An X-ray beam with a wavelength of exactly 5.00 × 10⁻¹⁴ m strikes a proton that…	PHY 104 Past Questions	View
935	Radioactive materials are usually stored in containers lined with metal. This i…	PHY 104 Past Questions	View
936	The focal length of a camera is 6 cm. By how much must the lens be moved to cha…	PHY 104 Past Questions	View
937	In an experiment using Young's slits, the distance between the center of the in…	PHY 104 Past Questions	View
938	Magnifying glasses are useful, because they create an enlarged:	PHY 104 Past Questions	View
939	What principle is responsible for the fact that certain sunglasses can reduce g…	PHY 104 Past Questions	View
940	A copper spring suspended from a fixed point supports a scale pan of mass 0.05 …	PHY 104 Past Questions	View
941	The reaction ²¹⁰Po → ²⁰⁶Pb + ______ is an example of	PHY 104 Past Questions	View
942	Evaluate the wavelength of the photon emitted as electron falls from the 7th or…	PHY 104 Past Questions	View
943	The diagram shows a box used for storing radioactive sources. Which material is…	PHY 104 Past Questions	View
944	According to the Bohr model, an electron gains or loses energy only by	PHY 104 Past Questions	View
945	A diffraction grating has 4000 lines per cm. The angle between the central maxi…	PHY 104 Past Questions	View
946	Photons with energies of 3.9 × 10⁻¹⁹ J strike a photoemissive surface whose wor…	PHY 104 Past Questions	View
947	A candle placed 23 cm from a lens, forms an image on a screen placed 75 cm on t…	PHY 104 Past Questions	View

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