Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.
-
Question 1121: What is the speed of a particle of mass 10-27kg whose wavelength is 10-8m.[h = 6.63 x 10-34Js]
Options:
A) 6.63ms-1
B) 66.30ms-1
C) 663.00ms-1
D) 6630.00ms-1
Show Answer
The correct answer is B .
-
Question 1122: Which of the following are found in the receiver but not in the microphone of a telephone handset? i. Diaphragm. ii. soft iron pole pieces. iii. permanent magnet. iv.carbon blocks
Options:
A) i and ii
B) i and iv
C) ii and iii
D) iii and iv
Show Answer
The correct answer is B .
-
Question 1123: Non-luminous object can be seen because they
Options:
A) reflect light
B) are near
C) are polished
D) emit light
Show Answer
The correct answer is A .
-
Question 1124:
Which of the following characteristics of a wave is used in the measurement of the depth of the Sea?
Options:
A) diffraction
B) interference
C) refraction
D) reflection
Show Answer
The correct answer is D .
-
Question 1125: The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junctions of 20°C and 80°C respectively is
Options:
A) 3.0 x 102Km-1
B) 3.0 x 103Km-1
C) 5.0 x 103Km-1
D) 3.0 x 104Km-1
Show Answer
The correct answer is B .
-
Question 1126: What type of reaction is represented by the equation
Options:
A) Ionization
B) Fusion
C) Fission
D) Chain
Show Answer
The correct answer is B .
-
Question 1127:
Which of the following does NOT describe the Image formed by a plane minor?
Options:
A) Erect
B) Laterally inverted
C) Same distance from mirror as object
D) Magnified
Show Answer
The correct answer is D .
-
Question 1128:
Which of the following statements is/are correct for a freely falling body?
I. the total is entirely kinetic
II. the ratio of potential energy to kinetic energy is constant
III. the sum of potential and kinetic energy is constant
Options:
A) I only
B) II only
C) III only
D) I and III only
Show Answer
The correct answer is C .
-
Question 1129:
Which of the following is a type of wave that is both mechanical and longitudinal?
Options:
A) Water waves
B) Seismic waves
C) Sound waves
D) Light waves
Show Answer
The correct answer is C .
-
Question 1130: A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill?
Options:
A) 528m
B) 66m
C) 136m
D) 264m
Show Answer
The correct answer is C .