Archives

The electric field inside a spherical shell of uniform surface charge density is____

Answer: The electric field inside a spherical shell of uniform surface charge density is zero. All charge resides on the outer surface so that... View Article

1.[CPMT 1975, 91, 2001; NCERT 1980, 83; EAMCET 1994; MP PET 1995; MNR 1998; Pb. PMT 2000]

The force is perpendicular to the displacement.... View Article

The occurrence of earthquakes can be predicted precisely using the latest technology.

No, the occurrence of earthquakes cannot be predicted precisely. Buildings that are constructed in an earthquake prone area should be built in... View Article

In a crystal, the atoms arelocated at the position of [AMU 1985]

The sodium chloride crystal structure has a fcc lattice with one chloride ion at each lattice point and one sodium ion half a cube length above it. ... View Article

A magnet is brought towards acoil (i) speedly (ii) slowly then the induced e.m.f./induced charge will be respectively [RPMT 1997; MP PMT 2003]

The magnitude of induced e.m.f. is directly proportional to the rate of change of magnetic flux. Induced charge doesn't depend upon time. ... View Article

Find the photoelectric current in the given scenario

An image of the sun is formed by a lens of the focal length of 30 cm on the metal surface of a photoelectric cell and a photoelectric current 1... View Article

The news says that there was a 7.5 Richter scale in Nepal, you also recall an earthquake some years earlier in your hometown of 6 Richer scale. Which of the following would be true?

The power of an earthquake is expressed in terms of magnitude on a scale called Richter scale.... View Article

What is the magnitude of the gravitational force exerted by a 15Kg mass on a 25Kg mass separated by a distance of 25cm. What is the acceleration produced in each mass?

Let the masses of 2 bodies be m1 and m2 and let their accelerations be a1 and a2 respectively. Distance between them d= 0.25m a1 =... View Article

The expectedenergy of the electrons at absolute zero is called [RPET 1996]

The highest energy level which an electron can occupy in the valence band at 0 K, is called Fermi energy level.... View Article

Lenz’s law isconsequence of the law of conservation of [JIPMER 1997; CPMT 1990; RPMT 1997; MP PET 1999; MP PMT 2000, 03; RPET 2003; AFMC 2004]

Lenz's law is a consequence of the law of conservation of energy. Lenz’s law states that induced electromotive force with different polarities... View Article

A star emits light of 5500 Å wavelength. Its appearsblue to an observer on the earth, it means[DPMT 2002]

Blue radiations have the wavelength around 4600Å. It shows that apparent wavelength is smaller than the real wavelength. It means that the star... View Article

Earthquakes cause Tsunamis but Tsunamis do not cause earthquakes.

Tremors displace large amounts of water and this leads to Tsunami. But a Tsunami does not cause an earthquake as it is a surface phenomenon. ... View Article

The nature ofbinding for a crystal with alternate and evenly spaced positive and negative ions is [CBSE PMT 2000]

Ionic bonds cone into being when atoms that have low ionization energies, and hence lose electrons rapidly, interact with other atoms that and to... View Article

The energy levels of the hydrogen spectrumis shown in figure.some transitions A, B, C, D and E. Transition A, B and C respectively represent [CPMT 1986, 88]

Transition A (n = ¥ to 1) : Series limit of Lyman seriesTransition B (n = 5 to n = 2) :Third spectral line of Balmer seriesTransition C (n = 5 to... View Article

M	T	W	T	F	S	S
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30

Archives

The electric field inside a spherical shell of uniform surface charge density is____

1.[CPMT 1975, 91, 2001; NCERT 1980, 83; EAMCET 1994; MP PET 1995; MNR 1998; Pb. PMT 2000]

The occurrence of earthquakes can be predicted precisely using the latest technology.

In a crystal, the atoms arelocated at the position of [AMU 1985]

A magnet is brought towards acoil (i) speedly (ii) slowly then the induced e.m.f./induced charge will be respectively [RPMT 1997; MP PMT 2003]

Find the photoelectric current in the given scenario

The news says that there was a 7.5 Richter scale in Nepal, you also recall an earthquake some years earlier in your hometown of 6 Richer scale. Which of the following would be true?

What is the magnitude of the gravitational force exerted by a 15Kg mass on a 25Kg mass separated by a distance of 25cm. What is the acceleration produced in each mass?

The expectedenergy of the electrons at absolute zero is called [RPET 1996]

Lenz’s law isconsequence of the law of conservation of [JIPMER 1997; CPMT 1990; RPMT 1997; MP PET 1999; MP PMT 2000, 03; RPET 2003; AFMC 2004]

A star emits light of 5500 Å wavelength. Its appearsblue to an observer on the earth, it means[DPMT 2002]

Earthquakes cause Tsunamis but Tsunamis do not cause earthquakes.

The nature ofbinding for a crystal with alternate and evenly spaced positive and negative ions is [CBSE PMT 2000]

The energy levels of the hydrogen spectrumis shown in figure.some transitions A, B, C, D and E. Transition A, B and C respectively represent [CPMT 1986, 88]

Which type of material must be used for lightning rod?

Intensity of magneticfield due to earth at a point inside a hollow steel box is

Change in speed would continue as long as an unbalanced force is applied

Richter scale is used to?

By a monochromatic wave, we mean[AFMC 1995]

How does electric discharge in lightning occurs if air is a bad conductor?

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