1
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Monochromatic light is incident on a glass prism of angle $$A$$. If the refractive index of the material of the prism is $$\mu $$, a ray, incident at an angle $$\theta $$. on the face $$AB$$ would get transmitted through the face $$AC$$ of the prism provided :

JEE Main 2015 (Offline) Physics - Geometrical Optics Question 161 English
A
$$\theta > {\cos ^{ - 1}}\left[ {\mu \,\sin \left( {A + {{\sin }^{ - 1}}} \right.\left( {{1 \over \mu }} \right)} \right]$$
B
$$\theta < {\cos ^{ - 1}}\left[ {\mu \,\sin \left( {A + {{\sin }^{ - 1}}} \right.\left( {{1 \over \mu }} \right)} \right]$$
C
$$\theta > si{n^{ - 1}}\left[ {\mu \,\sin \left( {A - {{\sin }^{ - 1}}} \right.\left( {{1 \over \mu }} \right)} \right]$$
D
$$\theta < si{n^{ - 1}}\left[ {\mu \,\sin \left( {A - {{\sin }^{ - 1}}} \right.\left( {{1 \over \mu }} \right)} \right]$$
2
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
A red $$LED$$ emits light at $$0.1$$ watt uniformly around it. The amplitude of the electric field of the light at a distance of $$1$$ $$m$$ from the diode is :
A
$$5.48$$ $$V/m$$
B
$$7.75$$ $$V/m$$
C
$$1.73$$ $$V/m$$
D
$$2.45$$ $$V/m$$
3
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
A signal of $$5$$ $$kHz$$ frequency is amplitude modulated on a carrier wave of frequency $$2$$ $$MHz.$$ The frequencies of the resultant signal is/are :
A
$$2005$$ $$kHz, 2000$$ $$kHz$$ and $$1995$$ $$kHz$$
B
$$2000$$ $$kHz$$ and $$1995$$ $$kHz$$
C
$$2$$ $$MHz$$ only
D
$$2005$$ $$kHz$$ and $$1995$$ $$kHz$$
4
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion :
A
kinetic energy decreases, potential energy increases but total energy remains same
B
kinetic energy and total energy decrease but potential energy increases
C
its kinetic energy increases but potential energy and total energy decrease
D
kinetic energy, potential energy and total energy decrease
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12